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Document and Entity Information	12 Months Ended
Document and Entity Information	Dec. 31, 2018 shares
Document Information [Line Items]
Entity Registrant Name	Navios Maritime Partners L.P.
Trading Symbol	NMM
Entity Central Index Key	0001415921
Document Type	20-F
Document Period End Date	Dec. 31, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Well Known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Common Unitholders
Document Information [Line Items]
Entity Common Stock Shares Outstanding	169,054,258
General Partner Units
Document Information [Line Items]
Entity Common Stock Shares Outstanding	3,450,091

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 58,590	$ 24,047
Restricted cash	2,865	5,886
Accounts receivable, net	14,436	14,121
Amounts due from related parties	28,562	10,545
Prepaid expenses and other current assets	1,895	905
Notes receivable	4,764	4,802
Total current assets	111,112	60,306
Vessels, net	1,043,250	1,099,015
Other long-term assets	5,632	2,779
Deferred dry dock and special survey costs, net	10,820	16,253
Investment in affiliates	66,296	52,122
Loans receivable from affiliates	27,657	11,706
Intangible assets	4,332	8,080
Amounts due from related parties	28,880	34,891
Notes receivable, net of current portion	11,629	15,897
Note receivable from affiliates	4,525	4,253
Total non-current assets	1,203,021	1,244,996
Total assets	1,314,133	1,305,302
Current liabilities
Accounts payable	4,839	3,718
Accrued expenses	5,434	8,800
Deferred revenue	15,256	15,143
Financial liability short-term, net	1,699	0
Current portion of long-term debt, net	25,105	26,586
Total current liabilities	52,333	54,247
Long-term financial liability, net	22,121	0
Long-term debt, net	458,560	466,877
Deferred revenue	4,366	16,468
Total non-current liabilities	485,047	483,345
Total liabilities	537,380	537,592
Commitments and contingencies
Partners' capital:
Common Unitholders (169,054,258 and 147,797,720 units issued and outstanding at December 31, 2018 and December 31, 2017, respectively)	800,374	791,669
General Partner (3,450,091 and 3,016,284 units issued and outstanding at December 31, 2018 and December 31, 2017, respectively)	5,802	5,464
Notes receivable	(29,423)	(29,423)
Total partners' capital	776,753	767,710
Total liabilities and partners' capital	$ 1,314,133	$ 1,305,302

Consolidated Balance Sheets (Parentheticals) - shares	Dec. 31, 2018	Dec. 31, 2017
CONSOLIDATED BALANCE SHEETS [Abstract]
Common units issued	169,054,258	147,797,720
Common units outstanding	169,054,258	147,797,720
General Partners, units issued	3,450,091	3,016,284
General Partners, units outstanding	3,450,091	3,016,284

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Time charter and voyage revenues (includes related party revenue of $97, $654 and $1,939 for each of the years ended December 31, 2018, 2017 and 2016 respectively)	$ 231,361	$ 211,652	$ 190,524
Time charter and voyage expenses	(10,024)	(4,158)	(5,673)
Direct vessel expenses	(6,180)	(7,172)	(6,381)
Management fees (entirely through related parties transactions)	(68,871)	(67,310)	(59,209)
General and administrative expenses	(18,458)	(17,163)	(12,351)
Depreciation and amortization	(58,334)	(72,760)	(92,370)
Vessel impairment losses	(44,344)	(32,677)	(27,201)
Loss on sale of securities	0	0	(19,435)
Interest expense and finance cost, net	(42,766)	(38,225)	(31,247)
Interest income	4,408	3,277	541
Gain on change in control	0	4,068	0
Other income	1,554	9,884	14,523
Other expense	(5,384)	(5,133)	(4,270)
Equity in net earnings of affiliated companies	3,957	866	0
Net loss	(13,081)	(14,851)	(52,549)
Less: Net income attributable to the noncontrolling interest	0	(239)	0
Net loss attributable to Navios Partners unitholders	$ (13,081)	$ (15,090)	$ (52,549)
Loss per unit:
Common unit (basic and diluted)	$ (0.08)	$ (0.11)	$ (0.62)

Consolidated Statements of Operations (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Revenue from related parties	$ 97	$ 654	$ 1,939

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
OPERATING ACTIVITIES:
Net loss	$ (13,081)	$ (14,851)	$ (52,549)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	58,334	72,760	92,370
Vessel impairment losses	44,344	32,677	27,201
Loss on sale of securities	0	0	19,435
Gain on debt repayment	0	0	(2,140)
Non cash accrued interest income and amortization of deferred revenue	(12,522)	(12,512)	(5,717)
Non cash accrued interest income from receivable from affiliates	(272)	(204)	0
Amortization and write-off of deferred financing cost and discount	7,258	9,744	4,003
Amortization of deferred dry dock and special survey costs	6,180	6,725	6,381
Equity in net earnings of affiliated companies	(3,957)	(866)	59
Equity compensation expense	2,450	1,904	93
Allowance for doubtful accounts	0	1,495	0
Loss on vessel disposal	53	1,260	0
Gain on change in control	0	(4,068)	0
Changes in operating assets and liabilities:
Net increase in accounts receivable	(315)	(6,071)	(6,023)
Net increase in prepaid expenses and other current assets	(952)	(40)	(303)
Decrease in other long-term assets	0	0	61
Net increase in accounts payable	1,121	1,630	570
(Decrease)/ increase in accrued expenses	(3,776)	6,642	1,929
(Decrease)/increase in amounts due to related parties	0	(11,105)	3,025
Increase/ (decrease) in deferred revenue	113	(2,200)	(1,000)
Net increase in amounts due from related parties	(12,332)	(26,131)	(20,089)
Payments for dry dock and special survey costs	(4,327)	(3,290)	(5,493)
Net cash provided by operating activities	68,319	53,499	61,813
INVESTING ACTIVITIES:
Net cash proceeds from sale of vessels	76,264	113,818	0
Deposits for vessels acquisitions	0	(9)	0
Acquisition of vessels and favorable lease terms, net of cash acquired	(115,902)	(158,241)	(15,341)
Change to acquisition of Navios Containers assets and favorable lease terms, net of cash	0	(115,884)	0
Navios Containers repayment of seller’s credit	0	14,000	0
Change in control of Navios Containers, including disposed cash	0	(19,757)	0
Deposit for option to acquire vessel	(2,853)	(2,770)	0
Investment in affiliates	(14,460)	(10,000)	0
Repayments of notes receivable	4,688	4,687	0
Loans receivable from affiliates	(15,625)	(9,005)	(450)
Note receivable from affiliates	0	(4,050)	0
Proceeds from sale of securities	0	0	20,842
Net cash (used in)/ provided by investing activities	(67,888)	(187,211)	5,051
FINANCING ACTIVITIES:
Cash distributions paid	(10,261)	0	0
Net proceeds from issuance of general partner units	805	2,638	10
Proceeds from issuance of common units, net of offering costs	33,373	98,774	440
Proceeds from noncontrolling interest	0	17,324	0
Common units issuance cost for Navios Europe I loans	0	(726)	0
Proceeds from long-term debt and financial liability, net	83,300	514,703	29,000
Repayment of long-term debt and financial liability	(74,881)	(546,465)	(104,624)
Deferred financing cost	(1,245)	(7,802)	(1,141)
Proceeds from long-term borrowing of Navios Containers, net of financing cost	0	60,111	0
Net cash provided by/ (used in) financing activities	31,091	138,557	(76,315)
Increase/ (decrease) in cash, cash equivalents and restricted cash	31,522	4,845	(9,451)
Cash, cash equivalents and restricted cash, beginning of period	29,933	25,088	34,539
Cash, cash equivalents and restricted cash, end of period	61,455	29,933	25,088
Supplemental disclosures of cash flow information
Cash interest paid	35,244	26,630	26,694
Non cash financing activities
Equity compensation expense	2,450	1,904	93
Issuance of common units for transfer of Navios Europe I loans	0	28,697	0
Receivable from affiliates	0	(29,423)	0
Accrued deferred financing costs	410	0	0
Non cash investing activities
Notes receivable	0	(7,540)
Notes receivable			6,112
Other than temporary impairment on dividend in kind	560	0	0
Distribution of Navios Containers’ shares	4,243	0	0
Accrued interest on loan receivable from affiliates	$ 327	$ 278	$ 238

Consolidated Statements of Changes in Partners' Capital - USD ($) $ in Thousands	Total	General Partner	Common Unitholders	Note Receivable	Total Navios Partners' Capital	Noncontrolling interest
Balance at Dec. 31, 2015	$ 732,215	$ 4,169	$ 728,046	$ 0	$ 732,215	$ 0
Balance, Units at Dec. 31, 2015		1,695,509	83,079,710
Cash distribution paid ($0.06 per unit - see Note 21)					0
Proceeds from public offering and issuance of common units, net of offering costs (see Note 13), value	440		$ 440		440
Proceeds from public offering and issuance of common units, net of offering costs (see Note 13), units			244,201
Net proceeds from issuance of general partner units (see Note 13), value	10	$ 10			10
Net proceeds from issuance of general partner units (see Note 13), units		4,984
Stock based compensation (see Note 13)	93		$ 93		93
Distribution of Navios Containers’ shares ($4.96 per unit - see Note 20)	0
Net loss	(52,549)	$ (1,051)	(51,498)		(52,549)
Balance at Dec. 31, 2016	680,209	$ 3,128	$ 677,081	0	680,209	0
Balance, Units at Dec. 31, 2016		1,700,493	83,323,911
Cash distribution paid ($0.06 per unit - see Note 21)					0
Formation of Navios Containers	17,323					17,323
Issuance of restricted common units (see Note 13), value	1,904		$ 1,904		1,904
Issuance of restricted common units (see Note 13), units			2,040,000
Proceeds from public offering and issuance of common units, net of offering costs (see Note 13), value	98,175		$ 98,175		98,175
Proceeds from public offering and issuance of common units, net of offering costs (see Note 13), units			48,995,442
Net proceeds from issuance of general partner units (see Note 13), value	2,626	$ 2,626			2,626
Net proceeds from issuance of general partner units (see Note 13), units		1,308,415
Issuance of common units for transfer of Navios Europe I Loans (see Notes 13 & 18), value	(726)		$ 28,697	(29,423)	(726)
Issuance of common units for transfer of Navios Europe I Loans (see Notes 13 & 18), units			13,076,923
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), value	612	$ 12	$ 600		612
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), units		7,376	361,444
Navios Containers’ deconsolidation (see Note 3)	(17,562)					(17,562)
Distribution of Navios Containers’ shares ($4.96 per unit - see Note 20)	0
Net loss	(14,851)	$ (302)	$ (14,788)		(15,090)	239
Balance at Dec. 31, 2017	767,710	$ 5,464	$ 791,669	(29,423)	767,710	0
Balance, Units at Dec. 31, 2017		3,016,284	147,797,720
Cash distribution paid ($0.06 per unit - see Note 21)	(10,261)	$ (205)	$ (10,056)		(10,261)
Issuance of restricted common units (see Note 13), value	1,711	$ 91	$ 1,620		1,711
Issuance of restricted common units (see Note 13), units		57,848	2,834,538
Proceeds from public offering and issuance of common units, net of offering costs (see Note 13), value	33,373		$ 33,373		33,373
Proceeds from public offering and issuance of common units, net of offering costs (see Note 13), units			18,422,000
Net proceeds from issuance of general partner units (see Note 13), value	714	$ 714			714
Net proceeds from issuance of general partner units (see Note 13), units		375,959
Stock based compensation (see Note 13)	830		$ 830		830
Distribution of Navios Containers’ shares ($4.96 per unit - see Note 20)	(4,243)		(4,243)		(4,243)
Net loss	(13,081)	$ (262)	(12,819)		(13,081)
Balance at Dec. 31, 2018	$ 776,753	$ 5,802	$ 800,374	$ (29,423)	$ 776,753	$ 0
Balance, Units at Dec. 31, 2018		3,450,091	169,054,258

Consolidated Statements of Changes in Partners' Capital (Parentheticals)	12 Months Ended
	Dec. 31, 2018 $ / shares
Distribution Made To Limited Partner [Line Items]
Distribution Made To Limited Partner Distributions Paid Per Unit	$ 0.06
Navios Containers
Distribution Made To Limited Partner [Line Items]
Share Price	$ 4.96

Description of Business	12 Months Ended
Description of Business	Dec. 31, 2018
DESCRIPTION OF BUSINESS [Abstract]
Description of Business	NOTE 1 – DESCRIPTION OF BUSINESS Navios Maritime Partners L.P. (“Navios Partners” or the “Company”), is an international owner and operator of dry cargo vessels, formed on August 7, 2007 under the laws of the Republic of the Marshall Islands. Navios GP L.L.C. (the “General Partner”), a wholly owned subsidiary of Navios Maritime Holdings Inc. (“Navios Holdings”), was also formed on that date to act as the general partner of Navios Partners and received a 2.0% general partner interest in Navios Partners. Navios Partners is engaged in the seaborne transportation services of a wide range of dry cargo commodities including iron ore, coal, grain, fertilizer and also containers, chartering its vessels under medium to longer-term charters. The operations of Navios Partners are managed by Navios ShipManagement Inc., a subsidiary of Navios Holdings (the “Manager”), from its offices in Piraeus, Greece, Singapore and Monaco. Pursuant to the initial public offering (“IPO”) on November 16, 2007, Navios Partners entered into the following agreements: (a) a management agreement with the Manager (the “Management Agreement”), pursuant to which the Manager provides Navios Partners commercial and technical management services; (b) an administrative services agreement with the Manager (the “Administrative Services Agreement”), pursuant to which the Manager provides Navios Partners administrative services; and (c) an omnibus agreement with Navios Holdings (the “Omnibus Agreement”), governing, among other things, when Navios Partners and Navios Holdings may compete against each other as well as rights of first offer on certain drybulk carriers. As of December 31, 2018, there were outstanding: 169,054,258 common units and 3,450,091 general partnership units. As of December 31, 2018, Navios Holdings owned a 20.0% interest in Navios Partners, which included a 2.0% general partner interest. Navios Containers Navios Maritime Containers Inc. (“Navios Containers”), an affiliate of the Company, was established in the Republic of the Marshall Islands on April 28, 2017. Navios Containers is a growth vehicle dedicated to the container sector of the maritime industry. On June 12, 2017, Navios Containers also registered and began trading on the Norwegian Over-The-Counter market under the ticker symbol NMCI. On November 30, 2018, Navios Containers Inc. was converted into a limited partnership, Navios Maritime Containers L.P. Following its conversion, Navios Containers also registered its common units for trading on the Nasdaq Global Select Market on December 10, 2018 under the ticker symbol NMCI. On June 8, 2017, Navios Containers closed its private placement and issued 10,057,645 shares for total gross proceeds of $50,288 at a subscription price of $5.00 per share. Navios Partners invested $30,000 and received 59.7% of the equity, and Navios Holdings invested $5,000 and received 9.9% of the equity of Navios Containers. Each of Navios Partners and Navios Holdings also received warrants, with a five-year term, for 6.8% and 1.7% of the equity, respectively. Navios Containers used the proceeds to acquire five 4,250 TEU vessels from Navios Partners for a total purchase price of $64,000. These vessels, first acquired by Navios Partners from Rickmers Maritime Trust Pte. (“Rickmers Trust”), were employed on charters with a net daily charter rate of $26,850. The charters expire in 2018 and early 2019. In addition, Navios Containers acquired all the rights under the acquisition agreements entered into between Navios Partners and Rickmers Trust to purchase the remaining nine vessels in the original 14-vessel container fleet. On August 29, 2017, Navios Containers closed its private placement of 10,000,000 shares at a subscription price of $5.00 per share, resulting in gross proceeds of $50,000. Navios Partners invested $10,000 and received 2,000,000 shares. Navios Partners also received warrants, with a five-year term, for 6.8% of the equity. As a result, from August 29, 2017, Navios Containers is considered an affiliate entity and the investment in Navios Containers is accounted for under the equity method due to the Company’s significant influence over Navios Containers. On November 9, 2017, Navios Containers closed a private placement of 9,090,909 shares at a subscription price of $5.50 per share, resulting in gross proceeds of approximately $50,000. Navios Partners invested $10,000 and received 1,818,182 shares. Navios Partners also received warrants, with a five-year term, for 6.8% of the newly issued equity. In connection with the Navios Containers’ deconsolidation, the Company recognized an amount of $174 related to the dilution gain of its investment in Navios Containers. The amount was recognized in the Consolidated Statements of Operations under the caption of “Equity in net earnings of affiliated companies” for the year ended December 31, 2017. On March 13, 2018, Navios Containers closed a private placement of 5,454,546 shares at a subscription price of $5.50 per share, resulting in gross proceeds of approximately $30,000. Navios Partners invested $14,460 and received 2,629,095 shares and Navios Holdings invested $500 and received 90,909 shares. Navios Partners and Navios Holdings also received 370,909 and 9,273 warrants, with a five-year term, respectively. On December 3, 2018, Navios Partners distributed 855,001 units of Navios Containers to the unitholders of Navios Partners, approximately 2.5% of the Navios Containers’ outstanding equity. The amount of the distribution was $4,243 based on the last trading price of Navios Containers’ shares in the N-OTC market as of November 23, 2018. In connection with this transaction, Navios Partners recognized an other-than-temporary impairment of $560 on the units distributed, which was presented under the caption “Equity in net earnings of affiliated companies” in the Consolidated Statements of Operations. Following the distribution, Navios Partners owns approximately 33.5% of the equity in Navios Containers. As of December 31, 2018, Navios Partners held 11,592,276 common units (33.5% of the equity), and Navios Holdings held 1,263,276 common units (3.7% of the equity) of Navios Containers.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Summary of Significant Accounting Policies

NOTE 2 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

(a) Basis of presentation: The accompanying consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP).

The Company elected to early adopt the requirements of Accounting Standard Update (“ASU”) 2016-02, “Leases (Topic 842)” effective from January 1, 2018 using the modified retrospective method and has also elected the use of the practical expedients. The early adoption of this ASU did not have a material effect on the Company’s Consolidated Balance Sheets, Consolidated Statements of Operations and opening retained earnings.

On January 1, 2018, the Company adopted ASU No. 2014-09, “Revenue from Contracts with Customers” and the related amendments (“ASC 606” or “the new revenue standard”) using the modified retrospective method.

On January 1, 2018, the Company adopted ASU 2016-18, “Restricted Cash” (“ASU 2016-18”), which updated ASC Topic 230, “Statement of Cash Flows.” ASU 2016-18 required companies to include restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The recognition and measurement guidance for restricted cash is not affected. The Company applied this guidance retrospectively to all prior periods presented in the Company’s financial statements. The reclassification of restricted cash in the statement of cash flows does not impact net income as previously reported or any prior amounts reported on the statements of comprehensive income, or balance sheet. The effect of the retrospective application of this change in accounting principle on the Company’s statement of cash flows for the year ended December 31, 2017 and 2016 resulted in a (decrease)/ increase in net cash provided by operating activities of $(435) and $5,286, a (decrease)/ increase in net cash provided by/ (used in) financing activities of $(1,407) and $(5,347) with a corresponding decrease in cash and cash equivalents of $(1,842) and $(61) (see Note 4 — Cash and Cash Equivalents).

(b) Principles of consolidation: The accompanying consolidated financial statements include Navios Partners’ wholly owned subsidiaries incorporated under the laws of Marshall Islands, Malta, and Liberia from their dates of incorporation or, for chartered-in vessels, from the dates charter-in agreements were in effect. All significant inter-company balances and transactions have been eliminated in Navios Partners’ consolidated financial statements.

Navios Partners also consolidates entities that are determined to be variable interest entities (“VIE”) as defined in the accounting guidance, if it determines that it is the primary beneficiary. A VIE is defined as a legal entity where either (i) equity interest holders as a group lack the characteristics of a controlling financial interest, including decision making ability and an interest in the entity’s residual risks and rewards, (ii) the equity holders have not provided sufficient equity investment to permit the entity to finance its activities without additional subordinated financial support, or (iii) the voting rights of some investors are not proportional to their obligations to absorb the expected losses of the entity, their rights to receive the expected residual returns of the entity, or both and substantially all of the entity’s activities either involve or are conducted on behalf of an investor that has disproportionately few voting rights.

Based on internal forecasts and projections that take into account reasonably possible changes in our trading performance, management believes that the Company has adequate financial resources to continue in operation and meet its financial commitments, including but not limited to capital expenditures and debt service obligations, for a period of at least twelve months from the date of issuance of these consolidated financial statements. Accordingly, the Company continues to adopt the going concern basis in preparing its financial statements.

Subsidiaries: Subsidiaries are those entities in which Navios Partners has an interest of more than one half of the voting rights or otherwise has power to govern the financial and operating policies of the entity.

The accompanying consolidated financial statements include the following entities:

		Country of	Statements of Operations
Company name	Vessel name	incorporation	2018	2017	2016
Libra Shipping Enterprises Corporation(5)	Navios Libra II	Marshall Is.	1/01 – 12/14	1/01 – 12/31	1/01 – 12/31
Alegria Shipping Corporation	Navios Alegria	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Felicity Shipping Corporation(6)	Navios Felicity	Marshall Is.	1/01 – 12/04	1/01 – 12/31	1/01 – 12/31
Gemini Shipping Corporation(1)	Navios Gemini S	Marshall Is.	—	1/01 – 12/21	1/01 – 12/31
Galaxy Shipping Corporation	Navios Galaxy I	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Aurora Shipping Enterprises Ltd.	Navios Hope	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Palermo Shipping S.A.(2)	Navios Apollon	Marshall Is.	—	1/01 – 4/21	1/01 – 12/31
Fantastiks Shipping Corporation	Navios Fantastiks	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Sagittarius Shipping Corporation	Navios Sagittarius	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Hyperion Enterprises Inc.	Navios Hyperion	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Chilali Corp.	Navios Aurora II	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Surf Maritime Co.	Navios Pollux	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Pandora Marine Inc.	Navios Melodia	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Customized Development S.A.	Navios Fulvia	Liberia	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Kohylia Shipmanagement S.A.	Navios Luz	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Orbiter Shipping Corp.	Navios Orbiter	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Floral Marine Ltd.	Navios Buena Ventura	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Golem Navigation Limited	Navios Soleil	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Kymata Shipping Co.	Navios Helios	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Joy Shipping Corporation	Navios Joy	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Micaela Shipping Corporation	Navios Harmony	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Pearl Shipping Corporation	Navios Sun	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Velvet Shipping Corporation	Navios La Paix	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Perigiali Navigation Limited	Navios Beaufiks	Marshall Is.	1/01 – 12/31	1/01 – 12/31	12/30 – 12/31
Finian Navigation Co.	Navios Ace	Marshall Is.	1/01 – 12/31	6/09 – 12/31	—
Ammos Shipping Corp.	Navios Prosperity I	Marshall Is.	1/01 – 12/31	6/07 – 12/31	—
Wave Shipping Corp.	Navios Libertas	Marshall Is.	1/01 – 12/31	7/10 – 12/31	—
Casual Shipholding Co.	Navios Sol	Marshall Is.	1/01 – 12/31	7/17 – 12/31	—
Avery Shipping Company	Navios Symphony	Marshall Is.	1/01 – 12/31	9/20 – 12/31	—
Coasters Ventures Ltd.	Navios Christine B	Marshall Is.	1/01 – 12/31	8/11 – 12/31	—
Ianthe Maritime S.A.	Navios Aster	Marshall Is.	1/01 – 12/31	8/21 – 12/31	—
Rubina Shipping Corporation	Hyundai Hongkong	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Topaz Shipping Corporation	Hyundai Singapore	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Beryl Shipping Corporation	Hyundai Tokyo	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Cheryl Shipping Corporation	Hyundai Shanghai	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Christal Shipping Corporation	Hyundai Busan	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Fairy Shipping Corporation(3)	YM Utmost	Marshall Is.	1/01 – 7/02	1/01 – 12/31	1/01 – 12/31
Limestone Shipping Corporation(3)	YM Unity	Marshall Is.	1/01 – 7/02	1/01 – 12/31	1/01 – 12/31
Dune Shipping Corp.(4)	MSC Cristina	Marshall Is.	—	1/01 – 1/12	1/01 – 12/31
Citrine Shipping Corporation	—	Marshall Is.	—	—	—
Cavalli Navigation Inc.	—	Marshall Is.	—	—	—
Seymour Trading Limited	Navios Altair I	Marshall Is.	6/07 – 12/31	—	—
Goldie Services Company	Navios Symmetry	Marshall Is.	5/21 – 12/31	—	—
Andromeda Shiptrade Limited	Navios Apollon I	Marshall Is.	5/09 – 12/31	—	—
Esmeralda Shipping Corporation	Navios Sphera	Marshall Is.	8/31 – 12/31	—	—
Triangle Shipping Corporation	Navios Mars	Marshall Is.	8/31 – 12/31	—	—
Chartered-in vessels
Cavos Navigation Co.	Navios Libra	Marshall Is.	—	—	—
Other
Prosperity Shipping Corporation	—	Marshall Is.	—	—	—
Aldebaran Shipping Corporation	—	Marshall Is.	—	—	—
JTC Shipping and Trading Ltd.(7)	Holding Company	Malta	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Maritime Partners L.P.	N/A	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Maritime Operating LLC.	N/A	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Partners Finance (US) Inc.	Co-Borrower	Delaware	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Partners Europe Finance Inc.	Sub-Holding Company	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31

(1) The vessel was sold on December 21, 2017 (see Note 7 – Vessels, net). (2) The vessel was sold on April 21, 2017 (see Note 7 – Vessels, net). (3) The vessels were sold on July 2, 2018 (see Note 7 – Vessels, net). (4) The vessel was sold on January 12, 2017 (see Note 7 – Vessels, net). (5) The vessel was sold on December 14, 2018 (see Note 7 – Vessels, net). (6) The vessel was sold on December 4, 2018 (see Note 7 – Vessels, net). (7) Not a vessel-owning subsidiary and only holds right to charter-in contracts.

Investments in Affiliates: Affiliates are entities over which the Company generally has between 20% and 50% of the voting rights, or over which the Company has significant influence, but it does not exercise control. Investments in these entities are accounted for under the equity method of accounting. Under this method, the Company records an investment in the stock of an affiliate at cost, and adjusts the carrying amount for its share of the earnings or losses of the affiliate subsequent to the date of investment and reports the recognized earnings or losses in income. Dividends received from an affiliate reduce the carrying amount of the investment. The Company recognizes gains and losses in earnings for the issuance of shares by its affiliates, provided that the issuance of such shares qualifies as a sale of such shares. When the Company’s share of losses in an affiliate equals or exceeds its interest in the affiliate, the Company does not recognize further losses, unless the Company has incurred obligations or made payments on behalf of the affiliate.

Affiliates included in the financial statements accounted for under the equity method: In the consolidated financial statements of Navios Partners, the following entities are included as affiliates and are accounted for under the equity method for such periods: (i) Navios Containers and its subsidiaries (ownership interest as of December 31, 2018 was 33.5%); (ii) Navios Europe I and its subsidiaries (ownership interest as of December 31, 2018 was 5.0%); and (iii) Navios Europe II and its subsidiaries (ownership interest as of December 31, 2018 was 5.0%).

(c) Use of Estimates: The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities as of the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. On an on-going basis, management evaluates the estimates and judgments, including those related to uncompleted voyages, future drydock dates, the selection of useful lives for tangible assets and scrap value expected future cash flows from long-lived assets to support impairment tests, provisions necessary for accounts receivable, provisions for legal disputes, and contingencies and the valuation estimates inherent in the deconsolidation gain. Management bases its estimates and judgments on historical experience and on various other factors that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ from those estimates under different assumptions and/or conditions.

(d) Cash and Cash Equivalents: Cash and cash equivalents consist of cash on hand, deposits held on call with banks, and other short-term liquid investments with original maturities of three months or less.

(e) Restricted Cash: As of December 31, 2018 and 2017, restricted cash includes an amount of $865 and $386, respectively, which related to amounts held in retention accounts in order to service debt and interest payments, as required by Navios Partners’ credit facilities. Also, as of December 31, 2018, restricted cash included $2,000 as cash collateral to the Term Loan B, due to the release of certain mortgaged vessels of the fleet. As of December 31, 2017, an amount of $5,500 was held as security in the form of a letter of guarantee, relating to the chartering of a vessel, which was released in March 2018. As of December 31, 2018 and 2017, the restricted cash was $2,865 and $5,886, respectively.

(f) Accounts Receivable, Net: The amount shown as accounts receivable, net at each balance sheet date includes receivables from charterers for hire, freight and demurrage billings, net of a provision for doubtful accounts. At each balance sheet date, all potentially uncollectible accounts are assessed individually for purposes of determining the appropriate provision for doubtful accounts. The allowance for doubtful accounts as of December 31, 2018 and 2017 was $1,495 and $1,495, respectively.

(g) Inventories: Inventories, which are comprised of bunkers due to freight voyages, are valued at cost as determined on the first-in, first-out basis.

(h) Vessels, Net: Vessels are stated at historical cost, which consists of the contract price and any material expenses incurred upon acquisition (improvements and delivery expenses). Vessels acquired in an asset acquisition or in a business combination are recorded at fair value. Subsequent expenditures for major improvements and upgrades are capitalized, provided they appreciably extend the life, increase the earnings capacity or improve the efficiency or safety of the vessels. The cost and related accumulated depreciation of assets retired or sold are removed from the accounts at the time of sale or retirement and any gain or loss is included in the accompanying Consolidated Statements of Operations.

Expenditures for routine maintenance and repairs are expensed as incurred.

Depreciation is computed using the straight line method over the useful life of the vessels, after considering the estimated residual value. Management estimates the residual values of our drybulk and containerships based on a scrap value cost of steel times the weight of the ship noted in lightweight ton (“LWT”). Residual values are periodically reviewed and revised to recognize changes in conditions, new regulations or other reasons. Revisions of residual values affect the depreciable amount of the vessels and affects depreciation expense in the period of the revision and future periods. The management after considering current market trends for scrap rates and 10-year average historical scrap rates of the residual values of the Company’s vessels, estimates scrap value at a rate of $340 per LWT.

Management estimates the useful life of our vessels to be 25 and 30 years from the drybulk and containership’s original construction, respectively. However, when regulations place limitations over the ability of a vessel to trade on a worldwide basis, its useful life is re-estimated to end at the date such regulations become effective. An increase in the useful life of a vessel or in its residual value would have the effect of decreasing the annual depreciation charge and extending it into later periods. A decrease in the useful life of a vessel or in its residual value would have the effect of increasing the annual depreciation charge.

(i) Assets Held For Sale: It is the Company’s policy to dispose of vessels and other fixed assets when suitable opportunities occur and not necessarily to keep them until the end of their useful life. The Company classifies assets and disposal groups as being held for sale when the following criteria are met: management has committed to a plan to sell the vessel (disposal group); the asset (disposal group) is available for immediate sale in its present condition subject only to terms that are usual and customary for sales of vessels; an active program to locate a buyer and other actions required to complete the plan to sell the asset (disposal group) have been initiated; the sale of the asset (disposal group) is probable and transfer of the asset (disposal group) is expected to qualify for recognition as a completed sale within one year; the asset (disposal group) is being actively marketed for sale at a price that is reasonable in relation to its current fair value; and actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. Long-lived assets or disposal groups classified as held for sale are measured at the lower of their carrying amount or fair value less cost to sell. These vessels are not depreciated once they meet the criteria to be held for sale. No assets were classified as held for sale as of December 31, 2018 and 2017.

(j) Impairment of Long Lived Assets: Vessels, other fixed assets and other long lived assets held and used by Navios Partners are reviewed periodically for potential impairment whenever events or changes in circumstances indicate that the carrying amount of a particular asset may not be fully recoverable. Navios Partners’ management evaluates the carrying amounts and periods over which long-lived assets are depreciated to determine if events or changes in circumstances have occurred that would require modification to their carrying values or useful lives. Measurement of the impairment loss is based on the fair value of the asset. Navios Partners determines the fair value of its assets on the basis of management estimates and assumptions by making use of available market data and taking into consideration third party valuations performed on an individual vessel basis. In evaluating useful lives and carrying values of long-lived assets, certain indicators of potential impairment, are reviewed such as undiscounted projected operating cash flows, vessel sales and purchases, business plans and overall market conditions.

Undiscounted projected net operating cash flows are determined for each asset group and compared to the carrying value of the vessel, the unamortized portion of deferred drydock and special survey costs related to the vessel and the related carrying value of the intangible assets with respect to the time charter agreement attached to that vessel or the carrying value of deposits for newbuildings. Within the shipping industry, vessels are customarily bought and sold with a charter attached. The value of the charter may be favorable or unfavorable when comparing the charter rate to then current market rates. The loss recognized either on impairment (or on disposition) will reflect the excess of carrying value over fair value (selling price) for the vessel asset group.

During the fourth quarter of fiscal year 2018, the Company concluded that events occurred and circumstances had changed, which indicated that potential impairment of Navios Partners’ long-lived assets may exist. These indicators included volatility in the spot market and the related impact of the current drybulk and container sector has on management’s expectation for future revenues. As a result, Navios Partners performed step one of the impairment assessment of the Company’s long-lived assets by comparing the undiscounted projected net operating cash flows for each vessel to its carrying value together with the carrying value of deferred drydock and special survey costs related to the vessel and the carrying value of the related intangible assets, if applicable. The significant factors and assumptions the Company used in the undiscounted projected net operating cash flow analysis included: determining the projected net operating cash flows by considering the charter revenues from existing time charters for the fixed fleet days (Navios Partners’ remaining charter agreement rates) and an estimated daily time charter equivalent for the unfixed days (based on a combination of one-year average historical time charter rates for the first year and 10-year average historical one-year time charter rates for the remaining period, adjusted for outliers) over the remaining economic life of each vessel, net of brokerage and address commissions, and excluding days of scheduled off-hires, management fees fixed until December 2019 and thereafter assuming an increase of 1.0% every second year and utilization rate of 98.6% based on the fleet’s historical performance.

As of December 31, 2018, our assessment concluded that step two of the impairment analysis was not required for our vessels held and used, as the undiscounted projected net operating cash flows exceeded the carrying value.

As of December 31, 2017, our assessment concluded that step two of the impairment analysis was required for one of our vessels held and used, as the undiscounted projected net operating cash flows did not exceed the carrying value. As a result, the Company recorded an impairment loss of $30,304 for this vessel, being the difference between the fair value and the vessel’s carrying value together with the carrying value of deferred drydock and special survey costs related to the vessel, presented under the caption “Vessel impairment losses” in the Consolidated Statements of Operations (see Note 7 — Vessels, net). The assessment performed for 2016 did not indicate a step two was necessary for the Company’s vessels held and used.

As of December 31, 2018, 2017 and 2016, an impairment loss of $44,344, $2,373 and $27,201, respectively, was also recognized in connection with the committed sale of the YM Unity and the YM Utmost in July 2018, the Navios Felicity and the Navios Libra II in December 2018, the Navios Gemini S in December 2017 and the MSC Cristina and Navios Apollon in 2016, as the carrying amount of each asset group was not recoverable and exceeded its fair value less costs to sell (see Note 7 — Vessels, net).

The total impairment loss recognized amounted to $44,344, $32,677 and $27,201 for the years ended December 31, 2018, 2017 and 2016, respectively, and was presented under the caption “Vessel impairment losses” in the Consolidated Statements of Operations.

(k) Deferred Drydock and Special Survey Costs: Navios Partners’ vessels are subject to regularly scheduled drydocking and special surveys which are generally carried out every 30 or 60 months, depending on the vessels’ ages to coincide with the renewal of the related certificates issued by the classification societies, unless a further extension is obtained in rare cases and under certain conditions. The cost of drydocking and special surveys are deferred and amortized over the above periods or to the next drydocking or special survey date if such date has been determined.

Costs capitalized as part of the drydocking or special survey consist principally of the actual costs incurred at the yard, and expenses relating to spare parts, paints, lubricants and services incurred solely during the drydocking or special survey period. For the years ended December 31, 2018, 2017 and 2016, the amortization expense was $6,180, $7,172 and $6,381, respectively.

(l) Deferred Financing Cost: Deferred financing costs include fees, commissions and legal expenses associated with obtaining or modifying credit facilities. Deferred financing costs are presented as a deduction from the corresponding liability. These costs are amortized over the life of the related facility using the effective interest rate method, and are included under the caption “Interest expense and finance cost, net”. Amortization and write-off of deferred financing costs, including amortization of debt discount, for each of the years ended December 31, 2018, 2017 and 2016 were $7,258, $9,744 and $4,003, respectively.

(m) Investments in Equity Securities: Navios Partners evaluates its investments in Navios Europe I, Navios Europe II and Navios Containers for other-than-temporary impairment on a quarterly basis. Consideration is given to (i) the length of time and the extent to which the fair value has been less than the carrying value, (ii) the financial condition and near-term prospects of Navios Europe I, Navios Europe II and Navios Containers, and (iii) the intent and ability of the Company to retain its investment in Navios Europe I, Navios Europe II and Navios Containers, for a period of time sufficient to allow for any anticipated recovery in fair value.

(n) Intangible Assets and Liabilities: Navios Partners’ intangible assets and liabilities consist of favorable lease terms and unfavorable lease terms. When intangible assets or liabilities associated with the acquisition of a vessel are identified, they are recorded at fair value. Fair value is determined by reference to market data and the discounted amount of expected future cash flows. Where charter rates are higher than market charter rates, an asset is recorded, being the difference between the acquired charter rate and the market charter rate for an equivalent vessel. Where charter rates are less than market charter rates, a liability is recorded, being the difference between the assumed charter rate and the market charter rate for an equivalent vessel. The determination of the fair value of acquired assets and assumed liabilities requires Navios Partners to make significant assumptions and estimates of many variables including market charter rates, expected future charter rates, the level of utilization of its vessels and its weighted average cost of capital. The use of different assumptions could result in a material change in the fair value of these items, which could have a material impact on Navios Partners’ financial position and results of operations.

The amortizable value of favorable and unfavorable leases is amortized over the remaining life of the lease term and the amortization expense is included under the caption “Depreciation and amortization” in the Consolidated Statements of Operations.

The amortizable value of favorable leases would be considered impaired if its carrying value could not be recovered from the future undiscounted cash flows associated with the asset. Management, after considering various indicators, performed on impairment test which included intangible assets as described in paragraph (j) above. As of December 31, 2018, 2017 and 2016 there was no impairment of intangible assets.

(o) Foreign Currency Translation: Navios Partners’ functional and reporting currency is the U.S. Dollar. Navios Partners engages in worldwide commerce with a variety of entities. Although, its operations may expose it to certain levels of foreign currency risk, its transactions are predominantly U.S. dollar denominated. Additionally, Navios Partners’ wholly-owned vessel subsidiaries transacted a nominal amount of their operations in Euros; however, all of the subsidiaries’ primary cash flows are U.S. dollar denominated. Transactions in currencies other than the functional currency are translated at the exchange rate in effect at the date of each transaction. Differences in exchange rates during the period between the date a transaction denominated in a foreign currency is consummated and the date on which it is either settled or translated, are recognized in the Statements of Operations. The foreign currency gains/(losses) recognized in the accompanying Consolidated Statements of Operations under the caption “Other income” or “Other expense”, for each of the years ended December 31, 2018, 2017 and 2016 were $21, $(54), and $11, respectively.

(p) Provisions: Navios Partners, in the ordinary course of its business, is subject to various claims, suits and complaints. Management, in consultation with internal and external advisors, will provide for a contingent loss in the financial statements if the contingency had been incurred as of the balance sheet date and the likelihood of loss was probable and the amount of the loss can be reasonably estimated. If Navios Partners has determined that the reasonable estimate of the loss is a range and there is no best estimate within the range, Navios Partners will accrue the lower amount of the range.

Navios Partners, through the management agreement, participates in Protection and Indemnity (P&I) insurance coverage plans provided by mutual insurance societies known as P&I clubs. Under the terms of these plans, participants may be required to pay additional premiums (supplementary calls) to fund operating deficits incurred by the clubs (“back calls”). Obligations for back calls are accrued annually based on information provided by the P&I clubs.

(q) Segment Reporting: Navios Partners reports financial information and evaluates its operations by charter revenues and not by the length of ship employment for its customers. Navios Partners does not use discrete financial information to evaluate operating results for each type of charter or vessel type. Management does not identify expenses, profitability or other financial information by charter type. As a result, management reviews operating results solely by revenue per day and operating results of the fleet and thus Navios Partners has determined that it operates under one reportable segment. For the period from April 28, 2017 to August 29, 2017, the Company had two reportable segments from which it derived its revenues: Navios Partners Operations and Navios Containers Operations. The reportable segments reflect the internal organization of the Company whereby the Chief Operating Decision Maker (“CODM”) reviews the discrete financial information of the Navios Partners’ controlled fleet and the Navios Containers’ controlled fleet (see Note 14 — Segment information).

(r) Revenue and Expense Recognition: On January 1, 2018, the Company adopted the provisions of ASC 606 “Revenue from Contracts with Customers”. The guidance provides a unified model to determine how revenue is recognized. In doing so, the Company makes judgments including identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price, and allocating the transaction price to each performance obligation. Revenue is recognized when (or as) the Company transfers promised goods or services to its customers in amounts that reflect the consideration to which the company expects to be entitled to in exchange for those goods or services, which occurs when (or as) the Company satisfies its contractual obligations and transfers control of the promised goods or services to its customers. Revenues are recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In determining the appropriate amount of revenue to be recognized as it fulfills its obligations under its agreements, the Company performs the following steps: (i) identification of the promised goods or services in the contract; (ii) determination of whether the promised goods or services are performance obligations, including whether they are distinct in the context of the contract; (iii) measurement of the transaction price, including the constraint on variable consideration; (iv) allocation of the transaction price to the performance obligations based on estimated selling prices; and (v) recognition of revenue when (or as) the Company satisfies each performance obligation.

The Company’s contract revenues from time chartering and pooling arrangements are governed by ASU 2016-02 (ASC 842) “Leases”. Upon adoption of ASC 606 and ASC 842, the timing and recognition of earnings from the pool arrangements and time charter contracts to which the Company is party did not change from previous practice. The Company has determined to recognize lease revenue as a combined single lease component for all time charters (operating leases) as the related lease component and non lease component will have the same timing and pattern of the revenue recognition of the combined single lease component. The performance obligations in a time charter contract are satisfied over term of the contract beginning when the vessel is delivered to the charterer until it is redelivered back to the Company. As a result of the adoption of these standards, there was no effect on the Company’s opening retained earnings, Consolidated Balance Sheets and Consolidated Statements of Operations.

The Company’s revenues earned under voyage contracts (revenues for the transportation of cargo) were previously recognized ratably over the estimated relative transit time of each voyage. A voyage was deemed to commence when a vessel was available for loading and was deemed to end upon the completion of the discharge of the current cargo. Estimated losses on voyages are provided for in full at the time such losses become evident. Under a voyage charter, a vessel is provided for the transportation of specific goods between specific ports in return for payment of an agreed upon freight per ton of cargo.

Upon adoption of ASC 606, the Company will recognize revenue ratably from port of loading to when the charterer’s cargo is discharged as well as defer costs that meet the definition of “costs to fulfill a contract” and relate directly to the contract. During 2017, no freight voyage existed and therefore, there was no impact on the Company’s results of operations, financial position or cash flows. Revenue from voyage contracts amounted to $9,660, $0 and $2,798 for the years ended December 31, 2018, 2017 and 2016, respectively.

Revenues are recorded net of address commissions. Address commissions represent a discount provided directly to the charterers based on a fixed percentage of the agreed upon charter or freight rate. Since address commissions represent a discount (sales incentive) on services rendered by the Company and no identifiable benefit is received in exchange for the consideration provided to the charterer, these commissions are presented as a reduction of revenue.

Revenues from time chartering of vessels are accounted for as operating leases and are thus recognized on a straight line basis as the average lease revenue over the rental periods of such charter agreements, as service is performed. A time charter involves placing a vessel at the charterers’ disposal for a period of time during which the charterer uses the vessel in return for the payment of a specified daily hire rate. Short period charters for less than three months are referred to as spot-charters. Charters extending three months to a year are generally referred to as medium-term charters. All other charters are considered long-term. Under time charters, operating costs such as for crews, maintenance and insurance are typically paid by the owner of the vessel. Revenue from time chartering of vessels amounted to $215,877, $203,775 and $192,900 for the years ended December 31, 2018, 2017 and 2016, respectively.

Profit-sharing revenues are calculated at an agreed percentage of the excess of the charterer’s average daily income (calculated on a quarterly or half-yearly basis) over an agreed amount and accounted for on an accrual basis based on provisional amounts and for those contracts that provisional accruals cannot be made due to the nature of the profit sharing elements, these are accounted for on the actual cash settlement or when such revenue becomes determinable.

For vessels operating in pooling arrangements, the Company earns a portion of total revenues generated by the pool, net of expenses incurred by the pool. The amount allocated to each pool participant vessel, including the Company’s vessels, is determined in accordance with an agreed-upon formula, which is determined by points awarded to each vessel in the pool based on the vessel’s age, design and other performance characteristics. Revenue under pooling arrangements is accounted for as variable rate operating leases on the accrual basis and is recognized when an agreement with the pool exists, price is fixed, service is provided and the collectability is reasonably assured. The allocation of such net revenue may be subject to future adjustments by the pool however, such changes are not expected to be material. The Company recognizes net pool revenue on a monthly and quarterly basis, when the vessel has participated in a pool during the period and the amount of pool revenue can be estimated reliably based on the pool report.

Revenue from vessels operating in pooling and profit sharing arrangements amounted to $5,824, $7,877 and $(5,174) for the years ended December 31, 2018, 2017 and 2016, respectively.

Deferred Revenue and Cash Received in Advance: Deferred revenue primarily relates to cash received from charterers prior to it being earned and the compensation received for the future reduction in the daily hire rates payable by HMM. These amounts are recognized as revenue over the voyage or charter period.

Time Charter and Voyage Expenses: Time charter and voyage expenses comprise all expenses related to each particular voyage, including time charter hire paid and voyage freight paid, bunkers, port charges, canal tolls, cargo handling, agency fees and brokerage commissions. Also included in time charter and voyage expenses are provisions for losses on time charters and voyages in progress at year-end, direct port terminal expenses and other miscellaneous expenses. Time charter expenses are expensed over the period of the time charter and voyage expenses are recognized as incurred.

Direct Vessel Expenses: Direct vessel expenses comprise the amortization related to drydocking and special survey costs of certain vessels of Navios Partners’ fleet.

Prepaid Voyage Costs: Prepaid voyage costs relate to cash paid in advance for expenses associated with voyages. These amounts are recognized as expenses over the voyage or charter period.

Management Fees: Pursuant to the amended Management Agreement, in each of October 2013, August 2014, February 2015 and February 2016, the Manager, a wholly owned subsidiary of Navios Holdings, provides commercial and technical management services to Navios Partners’ vessels for a daily fee of: (a) $4.10 daily rate per Ultra-Handymax vessel; (b) $4.20 daily rate per Panamax vessel; (c) $5.25 daily rate per Capesize vessel; (d) $6.70 daily rate per Containership of TEU 6,800; (e) $7.40 daily rate per Containership of more than TEU 8,000; and (f) $8.75 daily rate per very large Containership of more than TEU 13,000 through December 31, 2017. On November 14, 2017, Navios Partners agreed to extend the duration of its existing Management Agreement with the Manager until December 31, 2022 and to fix the rate for shipmanagement services of its owned fleet through December 31, 2019, effective from January 1, 2018. The new management fees excluding drydocking expenses which are reimbursed at cost by Navios Partners, are: (a) $4.23 daily rate per Ultra-Handymax vessel; (b) $4.33 daily rate per Panamax vessel; (c) $5.25 daily rate per Capesize vessel; (d) $6.70 daily rate per Containership of TEU 6,800; (e) $7.40 daily rate per Containership of more than TEU 8,000; and (f) $8.75 daily rate per very large Containership of more than TEU 13,000. Drydocking expenses under this agreement are reimbursed by Navios Partners at cost at occurrence.

General and Administrative Expenses: Pursuant to the Administrative Services Agreement dated November 16, 2007, the Manager also provides administrative services to Navios Partners, which include bookkeeping, audit and accounting services, legal and insurance services, administrative and clerical services, banking and financial services, advisory services, client and investor relations and other. The Manager is reimbursed for reasonable costs and expenses incurred in connection with the provision of these services. Navios Partners extended the duration of its existing Administrative Services Agreement with the Manager pursuant to the same terms, until December 31, 2022.

(s) Financial Instruments: Financial instruments carried on the balance sheet include cash and cash equivalents, restricted cash, trade receivables and payables, other receivables and other liabilities and long-term debt. The particular recognition methods applicable to each class of financial instrument are disclosed in the applicable significant policy description of each item, or included below as applicable.

Financial Risk Management: Navios Partners’ activities expose it to a variety of financial risks including fluctuations in future freight rates, time charter hire rates, fuel prices, credit and interest rates risk. Risk management is carried out under policies approved by executive management. Guidelines are established for overall risk management, as well as specific areas of operations.

Credit risk: Navios Partners closely monitors its credit exposure to customers and counter-parties for credit risk. Navios Partners has entered into the management agreement with the Manager, pursuant to which the Manager agreed to provide commercial and technical management services to Navios Partners. When negotiating on behalf of Navios Partners’ various vessel employment contracts, the Manager has policies in place to ensure that it trades with customers and counterparties with an appropriate credit history.

Financial instruments that potentially subject Navios Partners to concentrations of credit risk are accounts receivable and cash and cash equivalents. Navios Partners does not believe its exposure to credit risk is likely to have a material adverse effect on its financial position, results of operations or cash flows.

For the year ended December 31, 2018, HMM represented approximately 24.5% of total revenues. For the year ended December 31, 2017, HMM and Yang Ming accounted for approximately 26.8% and 12.0%, respectively, of our total revenues. For the year ended December 31, 2016, HMM, Yang Ming and Mediterranean Shipping Co. S.A. accounted for 29.6%, 13.0% and 11.6%, respectively, of our total revenues. No other customers accounted for 10% or more of total revenues for any of the years presented.

Liquidity Risk: Prudent liquidity risk management implies maintaining sufficient cash and marketable securities, the availability of funding through an adequate amount of committed credit facilities and the ability to close out market positions. Navios Partners monitors cash balances appropriately to meet working capital needs.

Foreign Exchange Risk: Foreign currency transactions are translated into the measurement currency rates prevailing at the dates of transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation of monetary assets and liabilities denominated in foreign currencies are recognized in the Consolidated Statements of Operations.

(t) Cash Distribution: As per the Partnership Agreement, within 45 days following the end of each quarter, to the extent and as may be declared by the Board, an amount equal to 100% of Available Cash with respect to such quarter shall be distributed to the partners as of the record date selected by the Board of Directors.

Available Cash: Generally means, for each fiscal quarter, all cash on hand at the end of the quarter:

•less the amount of cash reserves established by the board of directors to:

•provide for the proper conduct of the business (including reserve for Maintenance and Replacement Capital Expenditures)

•comply with applicable law, any of Navios Partners’ debt instruments, or other agreements; or

•provide funds for distributions to the unitholders and to the general partner for any one or more of the next four quarters;

•plus all cash on hand on the date of determination of Available Cash for the quarter resulting from working capital borrowings made after the end of the quarter. Working capital borrowings are generally borrowings that are made under any revolving credit or similar agreement used solely for working capital purposes or to pay distributions to partners.

Available Cash is a quantitative measure used in the publicly traded partnership investment community to assist in evaluating a partnership’s ability to make quarterly cash distributions. Available Cash is not required by US GAAP and should not be considered as an alternative to net income or any other indicator of Navios Partners’ performance required by US GAAP.

Cash distributions are recorded in the Company’s financial statements in the period in which they are declared. Navios Partners paid $10,261, $0 and $0 to its unitholders of common and general partner units during the years ended December 31, 2018, 2017 and 2016, respectively. On February 3, 2016, Navios Partners announced that its board of directors decided to suspend the quarterly cash distributions to its unitholders, including the distribution for the quarter ended December 31, 2015. In March 2018, the board determined to reinstate a distribution and any continued distribution will be at the discretion of our Board of Directors. The amount of any distributions paid under Navios Partners’ policy and the decision to make any distribution is determined by its board of directors, taking into consideration the terms of its partnership agreement.

Maintenance and Replacement Capital Expenditures: Maintenance and Replacement capital expenditures are those capital expenditures required to maintain over the long-term the operating capacity of or the revenue generated by Navios Partners’ capital assets, and expansion capital expenditures are those capital expenditures that increase the operating capacity of or the revenue generated by the capital assets. To the extent, however, that capital expenditures associated with acquiring a new vessel increase the revenues or the operating capacity of our fleet, those capital expenditures would be classified as expansion capital expenditures. As of December 31, 2018, 2017 and 2016, Maintenance and Replacement capital expenditures reserve approved by the Board of Directors was $26,787, $14,859 and $11,899, respectively.

(u) Stock-based compensation: In December 2018, 2017 and 2016, Navios Partners granted restricted common units to its directors and officers, which are based solely on service conditions and vest over four, four and three years, respectively. The fair value of the restricted common units was determined by reference to the quoted common unit price on the date of grant. Compensation expense, net of estimated forfeitures, is recognized based on a graded expense model over the vesting period. Compensation expense for the awards that vest upon achievement of the performance criteria is recognized when it is probable that the performance criteria will be met and are being accounted for as equity. The effect of compensation expense arising from the restricted common units described above amounted to $2,450, $1,904 and $93 as of December 31, 2018, 2017 and 2016, respectively, and was presented under the caption “General and administrative expenses” in the Consolidated Statements of Operations. There were no restricted common units exercised, forfeited or expired during the years ended December 31, 2018, 2017 and 2016. As of December 31, 2018, 1,720,426 restricted common units were vested, cumulatively.

(v) Income Taxes: The Company is a Marshall Islands Corporation. Pursuant to various treaties and the United States Internal Revenue Code, the Company believes that substantially all its operations are exempt from income taxes in the Marshall Islands and the United States of America. Under the laws of Marshall Islands, Malta and Liberia, the countries of the vessel-owning subsidiaries’ incorporation and vessels’ registration, the vessel-owning subsidiaries are subject to registration and tonnage taxes which have been included in vessel operating expenses in the accompanying Consolidated Statements of Operations.

(w) (Loss)/Earnings Per Unit: Basic (losses)/earnings per unit is computed by dividing net (loss)/income attributable to Navios Partners common unitholders by the weighted average number of common units outstanding during the periods presented. Diluted earnings per unit reflect the potential dilution that would occur if securities or other contracts to issue common units were exercised or converted. Diluted earnings per unit is calculated in the same manner as basic earnings per unit, except that the weighted average number of outstanding units increased to include the dilutive effect of outstanding unit options or phantom units.

(x) Guarantees: An asset for the fair value of a right undertaken in issuing the guarantee is recognized. The recognition of fair value is not required for certain guarantees such as the parent’s guarantee of a subsidiary’s debt to a third party or guarantees on product warranties. For those guarantees excluded from the above guidance requiring the fair value recognition of the asset, financial statement disclosures of their terms are made.

On November 15, 2012 (as amended in March 2014), Navios Holdings and Navios Partners entered into an agreement (the “Navios Holdings Guarantee”) by which Navios Holdings will provide supplemental credit default insurance with a maximum cash payment of $20,000. The final settlement of the amount due will take place at any time but in no case later than December 31, 2019, in accordance with a letter of agreement effective as of December 29, 2017. During the year ended December 31, 2018, the Company did not submit any claims to Navios Holdings for charterers’ default under this agreement. During the years ended December 31, 2017 and 2016, the Company submitted claims for charterers’ default under this agreement to Navios Holdings for a total amount of $7,242 and $9,153, respectively, net of applicable deductions, of which $7,623 and $9,635 was recorded as “Other income”. Net of the $2,000 write down, the claim amounted to $17,612, including accrued interest and discount unwinding of $389 for the year ended December 31, 2018, presented under the caption “Amounts due from related parties-short term” in the Consolidated Balance Sheets.

(y) Leases: Vessel leases where Navios Partners is regarded as the lessor are classified as either finance leases or operating leases based on an assessment of the terms of the lease.

For charters classified as finance leases the minimum lease payments are recorded as the gross investment in the lease. The difference between the gross investment in the lease and the sum of the present values of the two components of the gross investment is recorded as unearned income which is amortized to income over the lease term as finance lease interest income to produce a constant periodic rate of return on the net investment in the lease.

For charters classified as operating leases where Navios Partners is regarded as the lessor, refer to Note 2(r).

For charters classified as operating leases where Navios Partners is regarded as the lessee, the expense is recognized on a straight line basis over the rental periods of such charter agreements.

In cases of sale and leaseback transactions, if the transfer of the asset to the lessor does not qualify as a sale, then the transaction constitutes a failed sale and leaseback and is accounted for as a financing transaction. For a sale to have occurred, the control of the asset would need to be transferred to the buyer, and the buyer would need to obtain substantially all the benefits from the use of the asset.

(z) Financial Instruments and Fair Value: Guidance on Fair Value Measurements provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level I measurements) and the lowest priority to unobservable inputs (Level III measurements).

A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. In determining the appropriate levels, the Company performs a detailed analysis of the assets and liabilities that are subject to guidance on Fair Value Measurements.

(aa) Recent Accounting Pronouncements:

In December 2018, FASB issued ASU 2018-20, Leases (Topic 842), “Narrow-Scope Improvements for Lessors”: to clarificy guidance for lessors on sales taxes and other similar taxes collected from lessees, certain lessor costs and recognition of variable payments for contracts with lease and nonlease components. The Company has early adopted the standard effective January 1, 2018 and is using that date as the date of initial application. The adoption of this guidance did not have a material impact on the Company’s disclosures to the consolidated financial statements.

In October 2018, FASB issued ASU 2018-17, Consolidation (Topic 810): “Targeted Improvements to Related Party Guidance for Variable Interest Entities” (“ASU 2018-17”). ASU 2018-17 provides that indirect interests held through related parties in common control arrangements should be considered on a proportional basis for determining whether fees paid to decision makers and service providers are variable interests. This is consistent with how indirect interests held through related parties under common control are considered for determining whether a reporting entity must consolidate a VIE.. For Public business entities the amendments are effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact that adopting this new accounting guidance will

have on its disclosures to the consolidated financial statements.

In August 2018, FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement”. This update modifies the disclosure requirements on fair value measurements. ASU 2018-13 is effective for fiscal years beginning after December 15, 2019, and earlier adoption is permitted. The Company is currently assessing the impact that adopting this new accounting guidance will have on its disclosures to the consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”). ASU 2016-02 will apply to both types of leases – capital (or finance) leases and operating leases. According to the new Accounting Standard, (a) lessees will be required to recognize assets and liabilities on the balance sheet for the rights and obligations created by all leases with terms of more than 12 months and (b) previous accounting standards for lessors will be updated to align certain requirements with the updates to lessee accounting standards and the revenue recognition accounting standards. ASU 2016 – 02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted.

In July 2018, the FASB issued ASU 2018-11, Targeted Improvements to Topic 842 Leases (“ASU 2018-11). The improvements in ASU 2018-11 provide for (a) an optional new transition method for adoption that results in initial recognition of a cumulative effect adjustment to retained earnings in the year of adoption and (b) a practical expedient for lessors, under certain circumstances, to combine the lease and non-lease components of revenues for presentation purposes.

In addition, in July 2018, FASB issued ASU 2018-10, Codification Improvements to Topic 842 Leases (“ASU 2018-10”). The amendments in ASU 2018-10 affect narrow aspects of the guidance issued in the amendments in ASU 2016-02. The amendments in this update affect the amendments in Update 2016-02, which are not yet effective but for which early adoption upon issuance is permitted. For entities that early adopted Topic 842, the amendments are effective upon issuance of this update, and the transition requirements are the same as those in Topic 842. For entities that have not adopted Topic 842, the effective date and transition requirements will be the same as the effective date and transition requirements in Topic 842.

The Company has elected to early adopt the requirements of ASU 2016-02 effective January 1, 2018, through application of the alternative transition method, which is consistent, with the approach the Company has elected under the new revenue standard, and has elected to adopt the practical expedient for lessors to combine lease and non-lease components of revenue earned by its vessels under time charter agreements classified as operating leases.

The Company believes that combining the lease and non-lease components provides for more meaningful financial reporting as it is more reflective of the predominant component in the time charter contracts that is the lease component.

On January 1, 2018, the Company adopted Accounting Standards Update No. 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”) and the related amendments (“ASC 606” or “the new revenue standard”) using the modified retrospective method, requiring to recognize the cumulative effect of adopting this guidance as an adjustment to the 2018 opening balance of retained earnings and not retrospectively adjusting prior periods.

Under the new guidance, there is a five-step model to apply to revenue recognition. The five-steps consist of: (1) determination of whether a contract, an agreement between two or more parties that creates legally enforceable rights and obligations, exists; (2) identification of the performance obligations in the contract; (3) determination of the transaction price; (4) allocation of the transaction price to the performance obligations in the contract; and (5) recognition of revenue when (or as) the performance obligation is satisfied.

As a result of adoption, there was no cumulative impact to the Company’s retained earnings at January 1, 2018. The comparative information has not been restated and continues to be reported under the accounting standards in effect for those periods. The Company expects the impact of the adoption of the new standard to be immaterial to its net income on an ongoing basis.

In January 2017, FASB issued Accounting Standard Update No. 2017-03 “Accounting Changes and Error Corrections (Topic 250) and Investments- Equity Method and Joint Ventures (Topic 323).” The ASU amends the Codification for SEC staff announcements made at recent Emerging Issues Task Force (EITF) meetings. The SEC guidance that specifically relates to our Consolidated Financial Statements was from the September 2016 meeting, where the SEC staff expressed its expectations about the extent of disclosures registrants should make about the effects of the new FASB guidance as well as any amendments issued prior to adoption, on revenue (ASU 2014-09), leases (ASU 2016-02) and credit losses on financial instruments (ASU 2016-13) in accordance with SAB Topic 11.M. Registrants are required to disclose the effect that recently issued accounting standards will have on their financial statements when adopted in a future period. In cases where a registrant cannot reasonably estimate the impact of the adoption, then additional qualitative disclosures should be considered. The ASU incorporates these SEC staff views into ASC 250 and adds references to that guidance in the transition paragraphs of each of the three new standards. The adoption of this new accounting guidance did not have a material effect on the Company’s Consolidated Financial Statements.

In August 2016, the FASB issued Accounting Standards Update No. 2016-15, “Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments” (“ASU 2016-15”). This Update addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. The Company adopted the new guidance on January 1, 2018 and it did not have a material impact on the consolidated results of operations, financial condition, or cash flows.

Acquisition/ Deconsolidation	12 Months Ended
Acquisition/ Deconsolidation	Dec. 31, 2018
Disclosure Text Block [Abstract]
Acquisition/ Deconsolidation	NOTE 3: ACQUISITION/DECONSOLIDATION On June 7, 2017, after its special meeting of stockholders, Navios Containers announced the approval of the acquisition of five 4,250 TEU containerships from Navios Partners and the charter-out contracts for an aggregate purchase price of $64,000. Out of the total purchase price an amount of $40,000 was paid from the proceeds of the private placement on June 8, 2017 and the $24,000 balance as a seller’s credit by Navios Partners for a period of up to 90 days from the purchase date at LIBOR plus 375 bps. On June 30, 2017 and August 29, 2017, Navios Containers paid to Navios Partners $10,000 and $14,000, respectively, in relation to this agreement. On August 29, 2017, Navios Containers closed its private placement of 10,000,000 shares at a subscription price of $5.00 per share, resulting in gross proceeds of $50,000. Navios Partners invested $10,000 and received 2,000,000 shares. Navios Partners also received warrants, with a five-year term, for 6.8% of the equity. Immediately after the Navios Containers’ private placement, Navios Partners’ ownership of the outstanding voting stocks of Navios Containers decreased to 39.9% and Navios Partners no longer controls a majority of the voting power of Navios Containers. From that date onwards, Navios Containers has been considered as an affiliate entity of Navios Partners and not as a controlled subsidiary of the Company and the investment in Navios Containers has been accounted for under the equity method due to the Company’s significant influence over Navios Containers. On August 29, 2017, based on the equity method, the Company recorded an investment in Navios Containers of $40,000, which represents the fair value of the common stocks that were held by Navios Partners on such date. The remeasurement of the retained investment in Navios Containers was determined by reference to the share price of Navios Containers in the N-OTC market and had no impact in Company’s income statement. On August 29, 2017, the Company calculated a gain on change in control of $4,068 which is equal to the fair value of the Company’s investment in Navios Containers of $30,000 (including the cash paid for retaining a 39.9%) less the Company’s 59.7% interest in Navios Containers’ net assets of approximately $43,494 on August 29, 2017. As of December 31, 2018, Navios Partners held 11,592,276 common units (33.5% of the equity), and Navios Holdings held 1,263,276 common units (3.7% of the equity) of Navios Containers.

Cash and Cash Equivalents

12 Months Ended

Dec. 31, 2018

CASH AND CASH EQUIVALENTS [Abstract]

Cash and Cash Equivalents

NOTE 4 – CASH AND CASH EQUIVALENTS

Cash and cash equivalents consist of the following:

	December 31, 2018	December 31, 2017
Cash and cash equivalents	$ 58,590	$ 24,047
Restricted cash	2,865	5,886

Total cash and cash equivalents and restricted cash	$ 61,455	$ 29,933

Short-term deposits and highly liquid funds relate to amounts held in banks for general financing purposes and represent deposits with an original maturity of less than three months.

Cash deposits and cash equivalents in excess of amounts covered by government-provided insurance are exposed to loss in the event of non-performance by financial institutions. Navios Partners does maintain cash deposits and equivalents in excess of government-provided insurance limits. Navios Partners also minimizes exposure to credit risk by dealing with a diversified group of major financial institutions.

Restricted cash, at each of December 31, 2018 and December 31, 2017, included $865 and $386, respectively, which related to amounts held in retention accounts in order to service debt and interest payments, as required by certain of Navios Partners’ credit facilities. Also, as of December 31, 2018, restricted cash included $2,000 as cash collateral to the Term Loan B, due to the release of certain mortgaged vessels of the fleet. As of December 31, 2017, an amount of $5,500 was held as security in the form of a letter of guarantee, relating to the chartering of a vessel, which was released in March 2018.

Accounts Receivable, Net

12 Months Ended

Dec. 31, 2018

Accounts Receivable Net [Abstract]

Accounts Receivable, Net

NOTE 5: ACCOUNTS RECEIVABLE, NET

Accounts receivable consisted of the following:


	December 31, 2018	December 31, 2017
Accounts receivable	$ 15,931	$ 15,616
Less: Provision for doubtful accounts	(1,495)	(1,495)

Accounts receivable, net	$14,436	$14,121

Charges to provisions for doubtful accounts are summarized as follows:


Allowance for doubtful receivables	Balance at beginning of period	Charges to costs and expenses	Amount utilized	Balance at end of period
Year ended December 31, 2018	$ (1,495)	$ —	$ —	$ (1,495)
Year ended December 31, 2017	$ —	$ (1,495)	$ —	$ (1,495)
Year ended December 31, 2016	$ —	$ —	$ —	$ —

Concentration of credit risk with respect to accounts receivable is limited due to the Company’s large number of customers, who are internationally dispersed and have a variety of end markets in which they sell. Due to these factors, management believes that no additional credit risk beyond amounts provided for collection losses is inherent in the Company’s trade receivables. For the year ended December 31, 2018, one customer accounted for 24.5% of the Company’s revenue. For the year ended December 31, 2017, two customers accounted for 26.8% and 12.0%, respectively, of the Company’s revenue and for the year ended December 31, 2016, three customers accounted for 29.6%, 13.0% and 11.6% of the Company’s revenue.

Prepaid Expenses and Other Current Assets

12 Months Ended

Dec. 31, 2018

Prepaid Expenses And Other Assets [Abstract]

Prepaid Expenses and Other Current Assets

NOTE 6 – PREPAID EXPENSES AND OTHER CURRENT ASSETS

Prepaid expenses and other current assets consist of the following:


	December 31, 2018	December 31, 2017
Prepaid voyage costs	$ 134	$ 14
Inventory	1,004	220
Other	757	671

Total prepaid expenses and other current assets	$ 1,895	$ 905

Inventories, which are comprised of bunkers remaining on board as of December 31, 2018, due to freight voyages, are valued at cost as determined on the first-in, first-out basis.

Vessels, Net

12 Months Ended

Dec. 31, 2018

VESSELS, NET [Abstract]

Vessels, Net

NOTE 7 – VESSELS, NET

Vessels	Cost	Accumulated Depreciation	Net Book Value
Balance December 31, 2016	$ 1,354,298	$ (317,092)	$ 1,037,206
Additions	158,241	(56,210)	102,031
Disposals	(26,233)	18,688	(7,545)
Vessel impairment losses	(66,228)	33,551	(32,677)

Balance December 31, 2017	$ 1,420,078	$ (321,063)	$ 1,099,015
Additions	115,902	(54,585)	61,317
Disposals	(76,264)	—	(76,264)
Vessel impairment losses	(99,485)	58,667	(40,818)

Balance December 31, 2018	$ 1,360,231	$ (316,981)	$ 1,043,250

Acquisition of Vessels

2018

On August 31, 2018, Navios Partners acquired from its affiliate, Navios Holdings, the Navios Sphera, a 2016-built Panamax vessel of 84,872 dwt and the Navios Mars, a 2016-built Capesize vessel of 181,259 dwt, for an acquisition cost $79,000, in total.

On June 7, 2018, Navios Partners acquired from an unrelated third party the Navios Altair I, a 2006-built Panamax vessel of 74,475 dwt, for an acquisition cost of $11,842.

On May 21, 2018, Navios Partners acquired from an unrelated third party the Navios Symmetry, a 2006-built Panamax vessel of 74,381 dwt, for an acquisition cost of $11,811.

On May 9, 2018, Navios Partners acquired from an unrelated third party the Navios Apollon I, a 2005-built Panamax vessel of 87,052 dwt, for an acquisition cost of $13,446.

2017

On September 20, 2017, Navios Partners acquired from an unrelated third party the Navios Symphony, a 2010-built Capesize vessel of 178,132 dwt, for an acquisition cost of $27,961.

On August 21, 2017, Navios Partners acquired from an unrelated third party the Navios Aster, a 2010-built Capesize vessel of 179,314 dwt, for an acquisition cost of $28,855.

On August 11, 2017, Navios Partners acquired from a related third party the Navios Christine B, a 2009-built Ultra-Handymax vessel of 58,058 dwt, for an acquisition cost of $14,030.

On July 17, 2017, Navios Partners acquired from an unrelated third party the Navios Sol, a 2009-built Capesize vessel of 180,274 dwt, for an acquisition cost of $28,607.

On July 10, 2017, Navios Partners acquired from an unrelated third party the Navios Libertas, a 2007-built Panamax vessel of 75,511 dwt, for an acquisition cost of $13,737.

On June 9, 2017, Navios Partners acquired from an unrelated third party the Navios Ace, a 2011-built Capesize vessel of 179,016 dwt, for an acquisition cost of $31,364.

On June 7, 2017, Navios Partners acquired from an unrelated third party the Navios Prosperity I, a 2007-built Panamax vessel of 75,527 dwt, for an acquisition cost of $13,687.

Sale of Vessels

2018

On December 14, 2018, Navios Partners sold the Navios Libra II to an unrelated third party, for a net sale price of $4,559. The aggregate net carrying amount of the vessel, including the remaining carrying balance of dry dock and special survey cost of $657, amounted to $5,784 as at the date of sale.

On December 4, 2018, Navios Partners sold the Navios Felicity to an unrelated third party, for a net sale price of $4,705. The aggregate net carrying amount of the vessels, including the remaining carrying balance of dry dock and special survey cost of $818, amounted to $10,016 as at the date of sale. The loss on sale of the vessel was $53.

On July 2, 2018, Navios Partners sold the YM Unity and the YM Utmost to its affiliate, Navios Containers, for a total sale price of $67,000. The aggregate net carrying amount of the vessels, including the remaining carrying balance of dry dock and special survey costs of $2,104, amounted to $104,860 as at the date of sale.

2017

On December 21, 2017, Navios Partners sold the Navios Gemini S to an unrelated third party for a net sale price of $4,078. The aggregate net carrying amount of the vessel including the remaining carrying balance of dry dock and special survey cost of $502 amounted to $6,451 as at the date of sale.

On April 21, 2017, Navios Partners sold the Navios Apollon to an unrelated third party for a net sale price of $4,750. The aggregate net carrying amount of the vessel including the remaining carrying balance of dry dock and special survey cost of $782 amounted to $14,758 as at the date of sale.

On January 12, 2017, Navios Partners sold the MSC Cristina to an unrelated third party for a net sale price of $125,000. The aggregate net carrying amount of the vessel amounted to $142,193 as at the date of sale. The loss on sale of the vessel was $1,260 (see Note 23 — Other expense).

Vessel impairment losses

On October 25, 2018, Navios Partners entered into a Memorandum of Agreement with an unrelated third party for the disposal of the Navios Libra II for a net sale price of $4,559. The Company had a current expectation that the vessel would be sold before the end of its previously estimated useful life, and as a result performed an impairment test of the specific asset group. An impairment loss of $1,226 was recognized under the caption “Vessel impairment losses” in the Consolidated Statements of Operations as of December 31, 2018. The vessel was sold on December 14, 2018.

On October 2, 2018, Navios Partners entered into a Memorandum of Agreement with an unrelated third party for the disposal of the Navios Felicity for a net sale price of $4,705. The vessel was subject to an existing time charter with an unrelated charterer and was not immediately available for sale and therefore, did not qualify as an asset held for sale as of September 30, 2018. As of September 30, 2018, the Company had a current expectation that the vessel would be sold before the end of its previously estimated useful life, and as a result performed an impairment test of the specific asset group. An impairment loss of $5,258 has been recognized under the caption “Vessel impairment losses” in the Consolidated Statements of Operations as of December 31, 2018. The vessel was sold on December 4, 2018.

On April 27, 2018, Navios Partners agreed to sell the YM Unity and the YM Utmost to its affiliate, Navios Containers, for a total sale price of $67,000. As of June 30, 2018, the vessels had been classified as held for sale as the relevant criteria for the classification were met and, therefore, they were presented in the Consolidated Balance Sheets at their fair value totaling $67,000. An impairment loss of $37,860 for the vessels held for sale was presented under the caption “Vessel impairment losses” in the Consolidated Statements of Operations as of December 31, 2018. The vessels were sold on July 2, 2018, and proceeds from the sale were used to partially repay an amount of $20,200 of the DVB Credit Facility (see Note 11 — Borrowings).

As of December 31, 2017, Navios Partners concluded that step two of the impairment assessment was required for one of its vessels held and used, as the undiscounted projected net operating cash flows did not exceed the carrying value. As a result, the Company recorded an impairment loss of $30,304 for this vessel, being the difference between the fair value and the vessel’s carrying value.

On November 27, 2017, Navios Partners entered into a Memorandum of Agreement with an unrelated third party for the disposal of the Navios Gemini S for a net sale price of $4,078. As of December 31, 2017, the Company had a current expectation that the vessel would be sold before the end of its previously estimated useful life, and as a result performed an impairment test of the specific asset group. An impairment loss of $2,373 was recognized under the caption “Vessel impairment losses” in the Consolidated Statements of Operations as of December 31, 2017. The vessel was sold on December 21, 2017.

On January 9, 2017, Navios Partners entered into a Memorandum of Agreement with an unrelated third party for the disposal of the Navios Apollon for a net sale price of $4,750. The vessel was subject to an existing time charter with an unrelated charterer and was not immediately available for sale and therefore did not qualify as an asset held for sale as of December 31, 2016. As of December 31, 2016, the Company had a current expectation that the vessel would be sold before the end of its previously estimated useful life, and as a result performed an impairment test of the specific asset group. An impairment loss of $10,008 was recognized under the caption “Vessel impairment losses” in the Consolidated Statements of Operations as of December 31, 2016. The vessel was sold on April 21, 2017.

During June 2016, Navios Partners entered into a Memorandum of Agreement with an unrelated third party, for the disposal of the MSC Cristina. The vessel was subject to an existing time charter and management had committed to a plan to sell the vessel to the current charterer prior to June 2017.

As of December 31, 2016, the vessel had been classified as held for sale as the relevant criteria for the classification were met and, therefore, it was presented in the Consolidated Balance Sheets at its fair value less cost to sell totaling $125,000. An impairment loss of $17,193 for the vessel held for sale was presented under the caption “Vessel impairment losses” in the Consolidated Statements of Operations as of December 31, 2016. The vessel was sold on January 12, 2017 and proceeds from the sale of the vessel were used to fully repay the outstanding amount of the April 2015 Credit Facility and the June 2016 Credit Facility (see Note 11 — Borrowings). The loss on sale of the vessel was $1,260 (see Note 23 — Other expense).

Intangible Assets

12 Months Ended

Dec. 31, 2018

INTANGIBLE ASSETS [Abstract]

Intangible Assets

NOTE 8 – INTANGIBLE ASSETS

Intangible assets as of December 31, 2018 and December 31, 2017 consisted of the following:

	Cost	Accumulated Amortization	Net Book Value
Favorable lease terms December 31, 2016	$ 83,716	$ (64,764)	$ 18,952
Additions	—	(10,872)	(10,872)

Favorable lease terms December 31, 2017	$ 83,716	$ (75,636)	$ 8,080
Additions	—	(3,748)	(3,748)

Favorable lease terms December 31, 2018	$ 83,716	$ (79,384)	$ 4,332

Amortization expense of favorable lease terms for each of the years ended December 31, 2018, 2017 and 2016 is presented in the following table:


	Year Ended
	December 31, 2018	December 31, 2017	December 31, 2016
Favorable lease terms	$ (3,748)	$ (10,872)	$ (15,861)
Acceleration of favorable lease terms	—	—	(20,526)

Total	$ (3,748)	$ (10,872)	$ (36,387)

The aggregate amortization of the intangibles for the 12-month periods ended December 31 is estimated to be as follows:

Year	Amount
2019	1,166
2020	1,166
2021	1,166
2022 and thereafter	834

Total	$ 4,332

As of December 31, 2016, Navios Partners accelerated $20,526 of amortization of the Navios Luz and the Navios Buena Ventura favorable lease intangibles due to a change in their useful life following the termination of the Charter Party and early re-delivery of the vessels from Hanjin Shipping Co. on September 13, 2016.

Intangible assets subject to amortization are amortized using straight line method over their estimated useful lives to their estimated residual value of zero. The weighted average useful lives are 10.3 years for the remaining favorable lease terms, at inception.

Accounts Payable

12 Months Ended

Dec. 31, 2018

Accounts Payable [Abstract]

Accounts Payable

NOTE 9 – ACCOUNTS PAYABLE

Accounts payable as of December 31, 2018 and 2017 consisted of the following:


	December 31, 2018	December 31, 2017
Creditors	$ 1,744	$ 1,099
Brokers	2,262	1,936
Insurances	—	3
Professional and legal fees	833	680

Total accounts payable	$ 4,839	$ 3,718

Accrued Expenses

12 Months Ended

Dec. 31, 2018

Accrued Expenses [Abstract]

Accrued Expenses

NOTE 10 – ACCRUED EXPENSES

Accrued expenses as of December 31, 2018 and 2017 consisted of the following:


	December 31, 2018	December 31, 2017
Accrued voyage expenses	$ 2,828	$ 1,805
Accrued loan interest	2,244	1,981
Accrued legal and professional fees	252	889
Accrued bonus	110	4,125

Total accrued expenses	$ 5,434	$ 8,800

In December 2017, the Compensation Committee of Navios Partners authorized and approved an aggregate cash payment of $3,650 subject to fulfillment of certain service conditions that were provided and completed during 2017 and 2018. In December 2018, the Compensation Committee of Navios Partners authorized and approved a cash payment of $2,160 for which all service conditions had been met as of December 31, 2018. Also, the Compensation Committee of Navios Partners authorized and approved an additional $2,160 cash payment to the directors and officers of the Company subject to fulfillment of certain conditions in 2019. As of December 31, 2018 and 2017, an accrued amount of $110 and $4,125 is included in accrued bonus and an amount of $8,000 and $800 was paid during 2018 and 2017, respectively. The total amount of $3,985 and $3,475 was recorded in general and administrative expenses in Consolidated Statements of Operations for the years ended December 31, 2018 and 2017, respectively.

Borrowings

12 Months Ended

Dec. 31, 2018

Borrowings [Abstract]

Borrowings

NOTE 11 – BORROWINGS

Borrowings as of December 31, 2018 and December 31, 2017 consisted of the following:

	December 31, 2018	December 31, 2017
Term Loan B facility	$ 418,538	$ 441,471
Credit facilities	75,671	69,161

Total debt	$ 494,209	$ 510,632
Financial liability	24,842	—

Total borrowings	$ 519,051	$ 510,632
Less: Long-term unamortized discount	(6,629)	(10,824)
Less: Current portion of long-term borrowings, net	(26,804)	(26,586)
Less: Deferred finance costs, net	(4,937)	(6,345)

Long-term borrowings, net	$ 480,681	$ 466,877

As of December 31, 2018, the total borrowings, net of deferred finance fees and discount under the Navios Partners’ credit facilities were $507,485.

Term Loan B Facility: In June 2013, Navios Partners completed the issuance of the $250,000 Term Loan B Facility. On October 31, 2013 and November 1, 2013, Navios Partners completed the issuance of an $189,500 add-on to its existing Term Loan B Facility.

During 2016, Navios Partners prepaid $25,000 of the Term Loan B facility. The prepayment was fully applied to the balloon payment. Following the prepayment of May 2016, an amount of 187 was written-off from the deferred finance fees.

On March 14, 2017, Navios Partners completed the issuance of a new $405,000 Term Loan B Facility. The new Term Loan B Facility bears an interest rate of LIBOR plus 500 bps, it is set to mature on September 14, 2020 and is repayable in equal quarterly installments of 1.25% of the initial principal amount. Navios Partners used the net proceeds of the Term Loan B Facility to: (i) refinance the existing Term Loan B; and (ii) pay fees and expenses related to the Term Loan B. Following the refinancing of the Term Loan B Facility, an amount of $1,880 and $1,275, was written-off from the deferred finance fees and discount, respectively. On August 10, 2017, Navios Partners completed the issuance of a $53,000 add-on to its existing Term Loan B Facility. The add-on to the Term Loan B Facility bore the same terms as the Term Loan B Facility. Navios Partners used the net proceeds to partially finance the acquisition of three vessels.

The Term Loan B Facility is secured by first priority mortgages covering certain vessels owned by subsidiaries of Navios Partners, in addition to other collateral, and guaranteed by each subsidiary of Navios Partners. During the year ended December 31, 2018, four drybulk vessels were released from security of the Term Loan B Facility and in exchange, five drybulk vessels and $2,000 in cash substituted the released vessels, as collateral to the Term Loan B Facility.

The Term Loan B Facility requires maintenance of a loan to value ratio of 0.8 to 1.0, and other restrictive covenants customary for facilities of this type (subject to negotiated exceptions and baskets), including restrictions on indebtedness, liens, acquisitions and investments, restricted payments and dispositions. The Term Loan B Facility also provides for customary events of default, prepayment and cure provisions.

As of December 31, 2018, the outstanding balance of the Term Loan B Facility was $411,909, net of discount of $6,629, and is repayable in six quarterly installments of $5,733 with a final payment of $384,138, including the last installment on the last repayment date. The final maturity date is September 14, 2020.

BNP Credit Facility: On June 26, 2017, Navios Partners entered into a new credit facility with BNP PARIBAS (the “BNP Credit Facility”) of up to $32,000 (divided into two tranches) in order to finance a portion of the purchase price of the Navios Ace and the Navios Sol. On June 28, 2017, the first tranche of BNP Credit Facility of $17,000 was drawn. On July 18, 2017, the second tranche of BNP Credit Facility of $15,000 was drawn. On December 13, 2018, Navios Partners repaid the outstanding balance of the first tranche in the amount of $15,070. Following this repayment, an amount of $117 was written-off from the deferred finance fees as of December 31, 2018. As of December 31, 2018, the outstanding balance of the second tranche of the BNP Credit Facility was $12,915, and is repayable in eleven equal consecutive quarterly installments of $417 each, with a final balloon payment of $8,328 to be repaid on the last repayment date. The facility matures in the third quarter of 2021 and bears interest at LIBOR plus 300 bps per annum.

DVB Credit Facilities: On June 28, 2017, Navios Partners entered into a new credit facility with DVB Bank S.E. (the “DVB Credit Facility”) of up to $39,000 (divided into four tranches) in order to refinance the Commerzbank/DVB Credit Facility dated July 2012 and an additional amount of $7,000 to partially finance the acquisition of the Navios Prosperity I. The amounts of $7,000 and $32,000 were drawn on June 30, 2017 and November 3, 2017, respectively. On July 2, 2018, Navios Partners repaid the outstanding balance of the three tranches in the amount of $20,200. Following this repayment, an amount of $209 was written-off from the deferred finance fees as of June 30, 2018. As of December 31, 2018, the outstanding balance of the DVB Credit Facility was $13,000 and is repayable in one quarterly installment of $750 and seven consecutive quarterly installments of $571 each, with a final balloon payment of $8,250 to be repaid on the last repayment date. The facility matures in the fourth quarter of 2020 and bears interest at LIBOR plus 310 bps per annum.

On July 31, 2018, Navios Partners entered into a new credit facility with DVB Bank S.E. (the “DVB $44m Credit Facility”) of up to $44,000 (divided into two tranches) in order to finance the acquisition of the Navios Sphera and the Navios Mars. The amounts of $17,500 and $26,500 were drawn on August 30, 2018, respectively. As of December 31, 2018, the outstanding balance of the DVB $44m Credit Facility was $43,202 and is repayable in 19 consecutive quarterly installments of $798, with a final balloon payment of $28,050 to be repaid on the last repayment date. The facility matures in the third quarter of 2023 and bears interest at LIBOR plus 290 bps per annum.

Nordea/Skandinaviska Enskilda/NIBC Credit Facility: On March 26, 2018, Navios Partners entered into a new credit facility with Nordea Bank AB, Skandinaviska Enskilda BanKen AB and NIBC Bank N.V. (the “March 2018 Credit Facility”) of up to $14,300 (divided into two tranches) in order to finance a portion of the purchase of the Navios Symmetry and the Navios Altair I. On May 18, 2018, the first tranche of the March 2018 Credit Facility of $7,150 was drawn. On June 1, 2018 the second tranche of the March 2018 Credit Facility of $7,150 was drawn. On December 13, 2018, Navios Partners repaid the outstanding balance of the second tranche in the amount of $6,554. Following this repayment, an amount of $95 was written-off from the deferred finance fees as of December 31, 2018. As of December 31, 2018, the outstanding balance of the March 2018 Credit Facility was $6,554 and is repayable in 18 equal consecutive quarterly installments of $298, with a final balloon payment of $1,190 to be repaid on the last repayment date. The facility matures in the second quarter of 2023 and bears interest at LIBOR plus 300 bps per annum.

ABN AMRO Credit Facility: On June 23, 2016, Navios Partners entered into a new credit facility with ABN AMRO Bank N.V. (the “June 2016 Credit Facility”) of up to $30,000 to be used for the general corporate purposes of the Borrower. The June 2016 Credit Facility bore interest at LIBOR plus 400 bps per annum. The final maturity date was January 30, 2017. On January 12, 2017, Navios Partners fully repaid the June 2016 Credit Facility. As of December 31, 2018, there was no outstanding amount under this facility.

HSH Credit Facility: On April 16, 2015, Navios Partners, through certain of its wholly-owned subsidiaries, entered into a term loan facility agreement of up to $164,000 (divided into two tranches) with HSH Nordbank AG (the “April 2015 Credit Facility”), in order to finance a portion of the purchase price payable in connection with the acquisition of the MSC Cristina and one more super-post-panamax 13,100 TEU containership. On September 30, 2015, the second tranche of April 2015 Credit Facility of $83,000 was cancelled. The final maturity date was April 20, 2022. On January 12, 2017, Navios Partners fully repaid the April 2015 Credit Facility. Following the repayment, an amount of $516 was written-off from the deferred finance fees. As of December 31, 2018, there was no outstanding amount under this facility.

NIBC Credit Facility: On December 26, 2018, Navios Partners entered into a new credit facility with NIBC Bank N.V. (the “December 2018 Credit Facility”) of up to $28,500 (divided into three tranches) in order to refinance three Ultra-Handymax vessels. The credit facility has a term of approximately 5.0 years and bears interest at LIBOR plus 275 bps per annum. As of December 31, 2018, no amount has been drawn under this facility.

Financial Liability: In December 2018, the Company entered into two sale and leaseback agreements of $25,000 in total, with unrelated third parties for the Navios Fantastiks and the Navios Beaufiks. Navios Partners has a purchase obligation to acquire the vessels at the end of the lease term and under ASC 842-40, the transfer of the vessels was determined to be a failed sale. In accordance with ASC 842-40, the Company did not derecognize the respective vessels from its balance sheet and accounted for the amounts received under the sale and leaseback agreements as a financial liability. The terms under the sale and leaseback agreements included a daily rate of $5.3 and $5.1 for the Navios Fantastiks and the Navios Beaufiks, respectively, and an implied fixed interest rate of 7.6%. As of December 31, 2018, the outstanding balance under the sale and leaseback agreements of the Navios Fantastiks and Navios Beaufiks was $24,842 in total and is repayable in 68 and 59 equal consecutive average monthly installments of $161 and $155, respectively, including interest expense with a purchase obligation of $6,300 per vessel on the last repayment date. The agreements mature in the third quarter of 2024 and fourth quarter of 2023, respectively.

Amounts drawn under the credit facilities are secured by first preferred mortgages on certain Navios Partners’ vessels and other collateral and are guaranteed by the respective vessel-owning subsidiaries. The credit facilities contain a number of restrictive covenants that prohibit or limit Navios Partners from, among other things: incurring or guaranteeing indebtedness; entering into affiliate transactions; charging, pledging or encumbering the vessels; changing the flag, class, management or ownership of Navios Partners’ vessels; changing the commercial and technical management of Navios Partners’ vessels; selling or changing the beneficial ownership or control of Navios Partners’ vessels; not maintaining Navios Holdings’ (or its affiliates) ownership in Navios Partners of at least 15.0%; and subordinating the obligations under the credit facilities to any general and administrative costs relating to the vessels, including the fixed daily fee payable under the management agreement.

The credit facilities require compliance with a number of financial covenants, including: (i) maintain a required security amount ranging over 120% to 140%; (ii) minimum free consolidated liquidity in an amount equal to at least $650 per owned vessel; (iii) maintain a ratio of EBITDA to interest expense of at least 2.00:1.00; (iv) maintain a ratio of total liabilities or total debt to total assets (as defined in our credit facilities) ranging of less than 0.75; and (v) maintain a minimum net worth to $135,000.

The Financial Liability has no financial covenants.

It is an event of default under the credit facilities if such covenants are not complied with in accordance with the terms and subject to the prepayments or cure provisions of the facilities.

As of December 31, 2018, Navios Partners was in compliance with the financial covenants and/or the prepayment and/or the cure provisions as applicable in each of its credit facilities.

The maturity table below reflects the gross principal payments due under its credit facilities for the 12-month periods ended December 31:

Year	Amount
2019	$ 33,392
2020	414,297
2021	16,230
2022	6,833
2023 and thereafter	48,299
Total	$ 519,051

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2018

FAIR VALUE OF FINANCIAL INSTRUMENTS [ABSTRACT]

Fair Value of Financial Instruments

NOTE 12 – FAIR VALUE OF FINANCIAL INSTRUMENTS

The carrying value amounts of many of Navios Partners’ financial instruments, including cash and cash equivalents, restricted cash, accounts receivable and accounts payable and amounts due to related parties approximate their fair value due primarily to the short-term maturity of the related instruments.

The following methods and assumptions were used to estimate the fair value of each class of financial instrument:

Cash and cash equivalents: The carrying amounts reported in the Consolidated Balance Sheets for interest bearing deposits approximate their fair value because of the short maturity of these investments.

Restricted Cash: The carrying amounts reported in the Consolidated Balance Sheets for interest bearing deposits approximate their fair value because of the short maturity of these investments.

Amounts due from related parties, short-term: The carrying amount of due from related parties, short-term reported in the balance sheet approximates its fair value due to the short-term nature of these receivables.

Loans receivable from affiliates: The carrying amount of the fixed rate loan approximates its fair value.

Amounts due from related parties, long-term: The carrying amount of due from related parties long-term reported in the balance sheet approximates its fair value due to the long-term nature of these receivables.

Notes receivable, net of current portion: The carrying amount of the fixed rate notes receivable approximate its fair value.

Note receivable from affiliates: The carrying amount of the long-term receivable from affiliates approximates its fair value.

Term Loan B Facility: The fair value of the Company’s debt is estimated based on currently available debt with similar contract terms, interest rate and remaining maturities, as well as taking into account our creditworthiness. The book value has been adjusted to reflect the net presentation of deferred finance fees.

Other long-term borrowings, net: The book value has been adjusted to reflect the net presentation of deferred finance costs. The outstanding balance of the floating rate loans continues to approximate its fair value, excluding the effect of any deferred finance costs.

The estimated fair values of the Navios Partners’ financial instruments are as follows:

	December 31, 2018		December 31, 2017
	Book Value	Fair Value	Book Value	Fair Value
Cash and cash equivalents	$ 58,590	$58,590	$24,047	$24,047
Restricted cash	$ 2,865	$2,865	$5,886	$5,886
Amounts due from related parties, short-term	$ 28,562	$28,562	$10,545	$10,545
Loans receivable from affiliates	$ 27,657	$27,657	$11,706	$11,706
Amounts due from related parties, long-term	$ 28,880	$ 28,880	$ 34,891	$ 34,891
Notes receivable, net of current portion	$ 1,629	$ 11,629	$ 15,897	$ 15,897
Note receivable from affiliates	$ 4,525	$ 4,525	$ 4,253	$ 4,253
Term Loan B Facility, net	$ (408,662)	$ (414,352)	$ (425,144)	$ (441,471)
Other long-term borrowings, net	$ (98,823)	$ (100,513)	$ (68,319)	$ (69,161)

Fair Value Measurements

The estimated fair value of our financial instruments that are not measured at fair value on a recurring basis, categorized based upon the fair value hierarchy, are as follows:

Level I: Inputs are unadjusted, quoted prices for identical assets or liabilities in active markets that we have the ability to access. Valuation of these items does not entail a significant amount of judgment.

Level II: Inputs other than quoted prices included in Level I that are observable for the asset or liability through corroboration with market data at the measurement date.

Level III: Inputs that are unobservable. The Company did not use any Level III inputs as of December 31, 2018 and December 31, 2017.

	Fair Value Measurements at December 31, 2018
	Total	Level I	Level II	Level III
Cash and cash equivalents	$ 58,590	$ 58,590	—	—
Restricted cash	$ 2,865	$ 2,865	—	—
Amounts due from related parties, short-term	$ 28,562	—	$ 28,562	—
Loans receivable from affiliates	$ 27,657	—	$ 27,657	—
Amounts due from related parties, long-term	$ 28,880	—	$ 28,880	—
Notes receivable, net of current portion(2)	$ 11,629	—	$ 11,629	—
Note receivable from affiliates	$ 4,525	—	$ 4,525	—
Term Loan B facility, net(1)	$(414,352)	—	$ (414,352)	—
Other long-term borrowings, net (1)	$ (100,513)	—	$ (100,513)	—

	Fair Value Measurements at December 31, 2017
	Total	Level I	Level II	Level III
Cash and cash equivalents	$ 24,047	$ 24,047	—	—
Restricted cash	$ 5,886	$ 5,886	—	—
Amounts due from related parties, short-term	$ 10,545	—	$ 10,545	—
Loans receivable from affiliates	$ 11,706	—	$ 11,706	—
Amounts due from related parties, long-term	$ 34,891	—	$ 34,891	—
Notes receivable, net of current portion(2)	$ 15,897	—	$ 15,897	—
Note receivable from affiliates	$ 4,253	—	$ 4,253	—
Term Loan B facility, net(1)	$ (441,471)	—	$ (441,471)	—
Other long-term borrowings, net(1)	$ (69,161)	—	$ (69,161)	—

The estimated fair value of our financial instruments that are measured at fair value on a non-recurring basis, categorized based upon the fair value hierarchy, are as follows:

	Fair Value Measurements at December 31, 2018
	Total	Level I	Level II	Level III
Vessels, net (for Navios Felicity)	$ 4,705	—	$ 4,705	—
Vessels, net (for Navios Libra II)	$ 4,559	—	$ 4,559	—

	Fair Value Measurements at December 31, 2017
	Total	Level I	Level II	Level III
Vessels, net (for Navios Gemini S)	$ 4,078	—	$ 4,078	—
Vessels, net (for Navios Hope)	$ 16,127	—	$ 16,127	—
(1)The fair value of the Company’s debt is estimated based on currently available debt with similar contract terms, interest rate and remaining maturities as well as taking into account our creditworthiness. (2)The fair value is estimated based on currently available information on the Company’s counterparty with similar contract terms, interest rate and remaining maturities.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Issuance of Units	12 Months Ended
Issuance of Units	Dec. 31, 2018
ISSUANCE OF UNITS [Abstract]
Issuance of Units	NOTE 13 – ISSUANCE OF UNITS In December 2018, Navios Partners authorized the granting of 1,464,494 restricted common units, which were issued on December 24, 2018, to its directors and officers, which are based solely on service conditions and vest over four years. The fair value of the restricted common units was determined by reference to the quoted common unit price on the date of grant. Compensation expense, net of estimated forfeitures, is recognized when it is probable that the performance criteria will be met based on a graded expense model over the vesting period. Navios Partners also issued 29,888 general partnership units to its general partner for net proceeds of $27. As of December 31, 2018, the effect of compensation expense arising from the restricted common units described above amounted to $20 and was presented under the caption “General and administrative expenses” in the Consolidated Statements of Operations. There were no restricted common units exercised, forfeited or expired the year ended December 31, 2018. As of December 31, 2018, no restricted common units were vested. On February 21, 2018, Navios Partners completed a public offering of 18,422,000 common units at $1.90 per unit and raised gross proceeds of approximately $35,002. The net proceeds of this offering, including the underwriting discount and the offering costs of $1,629 in total, were approximately $33,373. Pursuant to this offering, Navios Partners issued 375,959 general partnership units to its general partner. The net proceeds from the issuance of the general partnership units were $714. In December 2017, Navios Partners authorized the granting of 1,370,044 restricted common units, which were issued on January 11, 2018, to its directors and officers, which are based solely on service conditions and vest over four years. The fair value of the restricted common units was determined by reference to the quoted common unit price on the date of grant. Compensation expense, net of estimated forfeitures, is recognized when it is probable that the performance criteria will be met based on a graded expense model over the vesting period. Navios Partners also issued 27,960 general partnership units to its general partner for net proceeds of $64. The effect of compensation expense arising from the restricted common units described above amounted to $1,600 and $72 as of December 31, 2018 and 2017, respectively, and was presented under the caption “General and administrative expenses” in the Consolidated Statements of Operations. There were no restricted common units exercised, forfeited or expired during each of the years ended December 31, 2018 and 2017. As of December 31, 2018, 353,761 restricted common units were vested. On September 1, 2017 and as part of the acquisition agreement entered into between the Company and Rickmers Trust, Navios Partners authorized and issued 361,444 restricted common units and 7,376 general partnership units to its general partner for net proceeds of $600 and $12, respectively. The fair value of the restricted common units was determined by reference to the quoted common unit price on the date of grant. On September 25, 2017, the fair value of the restricted common units described above was compensated by Navios Containers in full amount. There were no restricted common units exercised, forfeited or expired during each of the years ended December 31, 2018 and 2017. As of December 31, 2018, 180,722 restricted common units were vested. On March 20, 2017, Navios Partners completed a public offering of 47,795,000 common units at $2.10 per unit and raised gross proceeds of approximately $100,369. The net proceeds of this offering, including the underwriting discount and the offering costs of $4,383 in total, were approximately $95,986. Pursuant to this offering, Navios Partners issued 975,408 general partnership units to its general partner. The net proceeds from the issuance of the general partnership units were $2,049. On March 17, 2017, Navios Holdings transferred to Navios Partners its rights to the fixed 12.7% interest on the Navios Europe I’s Navios Term Loans I and Navios Revolving Loans I (including the respective accrued receivable interest) for a total amount of $33,473 for a cash consideration of $4,050 and 13,076,923 newly issued common units of Navios Partners, with fair value net of costs at date of issuance of $28,862 (see Note 18 — Transactions with related parties and affiliates). Pursuant to this transaction, Navios Partners issued 266,876 general partnership units to its general partner for net cash proceeds of $468. In December 2016, Navios Partners authorized the granting of 2,040,000 restricted common units, which were issued on January 31, 2017, to its directors and officers, which are based solely on service conditions and vest over three years. The fair value of the restricted common units was determined by reference to the quoted common unit price on the date of grant. Compensation expense, net of estimated forfeitures, is recognized when it is probable that the performance criteria will be met based on a graded expense model over the vesting period. Navios Partners also issued 41,633 general partnership units to its general partner for net proceeds of $63. The effect of compensation expense arising from the restricted common units described above amounted to $830 and $1,832 as of December 31, 2018 and 2017, respectively, and was presented under the caption “General and administrative expenses” in the Consolidated Statements of Operations. There were no restricted common units exercised, forfeited or expired during each of the years ended December 31, 2018 and 2017. As of December 31, 2018, 1,366,665 restricted common units were vested, cumulatively. As of December 31, 2018, the estimated compensation cost relating to service conditions of non-vested restricted common units granted in 2016, 2017 and 2018 not yet recognized was $3,074. On November 18, 2016, Navios Partners entered into a Continuous Offering Program Sales Agreement, which was further amended on June 2, 2017, pursuant to which Navios Partners may issue and sell from time to time through its agent common units representing limited partner interests having an aggregate offering price of up to $25,000. As of December 31, 2017 and 2016, Navios Partners issued 1,200,442 and 244,201 common units and received net proceeds of $2,221 and $440, respectively. Pursuant to the issuance of the common units, Navios Partners issued 24,498 general partnership units to its general partner in order to maintain its 2.0% general partner interest. As of December 31, 2017 and 2016, the net proceeds from the issuance of the general partnership units were $46 and $10, respectively. There were no equity transactions or units sold under this program during the year ended December 31, 2018. Navios Holdings currently owns an approximately 20.4% interest in Navios Partners, which includes the approximately 2.1% interest through Navios Partners’ general partner, which Navios Holdings owns and controls.

Segment Information

12 Months Ended

Dec. 31, 2018

SEGMENT INFORMATION [Abstract]

Segment Information

NOTE 14 – SEGMENT INFORMATION

For the period from April 28, 2017 up to August 29, 2017, the Company had two reportable segments from which it derived its revenues: Navios Partners Operations and Navios Containers Operations. The reportable segments reflect the internal organization of the Company whereby the Chief Operating Decision Maker (“CODM”) reviews the discrete financial information of the Navios Partners’ controlled fleet and the Navios Containers’ controlled fleet.

The Company measures segment performance based on net (loss)/income attributable to Navios Partners common unitholders. Summarized financial information concerning each of the Company’s reportable segments is as follows:

	Navios Partners Operations			Navios Containers Operations			Total
		Twelve Month	Twelve Month		Period from	Eliminations for the Period from		Twelve Month	Twelve Month
		Period Ended	Period Ended		April 28, 2017	April 28, 2017 to		Period Ended	Period Ended
		December 31,	December 31,		to August 29,	August 29,		December 31,	December 31,
		2018	2017		2017	2017		2018	2017
Revenue		$ 231,361	$ 199,297		$ 12,355	—		$ 231,361	$ 211,652
Management fees		(68,871)	(62,595)		(4,715)	—		(68,871)	(67,310)
Interest expense and finance cost, net		(42,766)	(37,647)		(767)	189		(42,766)	(38,225)
Depreciation and amortization		(58,334)	(67,885)		(4,875)	—		(58,334)	(72,760)
Net (loss)/ income		(13,081)	(15,089)		593	(355)		(13,081)	(14,851)
Total assets		1,314,133	1,305,302		—	—		1,314,133	1,305,302
Capital expenditures		(118,755)	(217,019)		(59,885)	—		(118,755)	(276,904)
Investment in affiliates		66,296	52,122		—	—		66,296	52,122
Cash and cash equivalents		58,590	24,047		—	—		58,590	24,047
Restricted cash		2,865	5,886		—	—		2,865	5,886
Long-term borrowings (including current and non-current portion), net		507,485	493,463		—	—		507,485	493,463

Navios Partners reports financial information and evaluates its operations by charter revenues. Navios Partners does not use discrete financial information to evaluate operating results for each type of charter or by sector. As a result, management reviews operating results solely by revenue per day and operating results of the fleet and thus Navios Partners has determined that it operates under one reportable segment.

The following table sets out operating revenue by geographic region for Navios Partners’ reportable segment. Revenue is allocated on the basis of the geographic region in which the customer is located. Drybulk and containerships operate worldwide. Revenues from specific geographic region, which contribute over 10% of total revenue, are disclosed separately.

Revenue by Geographic Region

Vessels operate on a worldwide basis and are not restricted to specific locations. Accordingly, it is not possible to allocate the assets of these operations to specific countries.

	Year Ended December 31, 2018	Year Ended December 31, 2017	Year Ended December 31, 2016

Asia	$ 120,660	$ 125,618	$ 112,019
Europe	86,633	47,308	54,006
North America	17,862	20,307	13,364
Australia	6,206	18,419	11,135
Total	$ 231,361	$ 211,652	$ 190,524

Income Taxes	12 Months Ended
Income Taxes	Dec. 31, 2018
INCOME TAXES [Abstract]
Income Taxes	NOTE 15 – INCOME TAXES Marshall Islands, Malta and Liberia do not impose a tax on international shipping income. Under the laws of Marshall Islands, Malta and Liberia, the countries of the vessel-owning subsidiaries’ incorporation and vessels’ registration, the vessel-owning subsidiaries are subject to registration and tonnage taxes, which have been included in vessel operating expenses in the accompanying Consolidated Statements of Operations. In accordance with the currently applicable Greek law, foreign flagged vessels that are managed by Greek or foreign ship management companies having established an office in Greece are subject to duties towards the Greek state, which are calculated on the basis of the relevant vessel’s tonnage. The payment of said duties exhausts the tax liability of the foreign ship owning company and the relevant manager against any tax, duty, charge or contribution payable on income from the exploitation of the foreign flagged vessel. Pursuant to Section 883 of the Internal Revenue Code of the United States, U.S. source income from the international operation of ships is generally exempt from U.S. income tax if the company operating the ships meets certain incorporation and ownership requirements. Among other things, in order to qualify for this exemption, the company operating the ships must be incorporated in a country, which grants an equivalent exemption from income taxes to U.S. corporations. All the vessel-owning subsidiaries satisfy these initial criteria. In addition, these companies must meet an ownership test. The management of Navios Partners believes that this ownership test was satisfied prior to the IPO by virtue of a special rule applicable to situations where the ship operating companies are beneficially owned by a publicly traded company. Although not free from doubt, management also believes that the ownership test will be satisfied based on the trading volume and ownership of Navios Partners’ units, but no assurance can be given that this will remain so in the future.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENCIES [Abstract]

Commitments And Contingencies

NOTE 16 – COMMITMENTS AND CONTINGENCIES

Navios Partners is involved in various disputes and arbitration proceedings arising in the ordinary course of business. Provisions have been recognized in the financial statements for all such proceedings where Navios Partners believes that a liability may be probable, and for which the amounts are reasonably estimable, based upon facts known at the date the financial statements were prepared. Management believes the ultimate disposition of these matters will be immaterial individually and in the aggregate to Navios Partners’ financial position, results of operations or liquidity.

In November 2017, Navios Partners agreed to charter-in, under a ten-year bareboat contract, from an unrelated third party, a newbuilding Panamax vessel of approximately 81,000 dwt, expected to be delivered in the second half of 2019. Navios Partners has agreed to pay in total $5,540, representing a deposit for the option to acquire the vessel after the end of the fourth year, of which the first half amounted to $2,770 was paid during the year ended December 31, 2017 and the second half amounted to $2,770 was paid during the year ended December 31, 2018, both presented under the caption “Other long-term assets” in the Consolidated Balance Sheets.

The future minimum commitments for the 12-month periods ended December 31, of Navios Partners under its charter-in contracts, net of commissions, are as follows:

	Amount
2019	$ 547
2020	2,178
2021	2,172
2022	2,149
2023	2,080
2024 and thereafter	11,691

Total	$20,817

Leases

12 Months Ended

Dec. 31, 2018

LEASES [Abstract]

Leases

NOTE 17 – LEASES

The future minimum contractual lease income (charter-out rates are presented net of commissions and assume no off-hires days) as of December 31, 2018, is as follows:


	Amount
2019	$ 95,815
2020	82,025
2021	80,837
2022	70,894
2023 and thereafter	248,448

Total	$578,019

Transactions with Related Parties and Affiliates	12 Months Ended
Transactions with Related Parties and Affiliates	Dec. 31, 2018
TRANSACTIONS WITH RELATED PARTIES AND AFFILIATES [Abstract]
Transactions with Related Parties and Affiliates	NOTE 18 – TRANSACTIONS WITH RELATED PARTIES AND AFFILIATES Management fees: Pursuant to the amended Management Agreement, in each of October 2013, August 2014, February 2015 and February 2016, the Manager, a wholly owned subsidiary of Navios Holdings, provides commercial and technical management services to Navios Partners’ vessels for a daily fee of: (a) $4.10 daily rate per Ultra-Handymax vessel; (b) $4.20 daily rate per Panamax vessel; (c) $5.25 daily rate per Capesize vessel; (d) $6.70 daily rate per Containership of TEU 6,800; (e) $7.40 daily rate per Containership of more than TEU 8,000; and (f) $8.75 daily rate per very large Containership of more than TEU 13,000 through December 31, 2017. On November 14, 2017, Navios Partners agreed to extend the duration of its existing Management Agreement with the Manager until December 31, 2022 and to fix the rate for shipmanagement services of its owned fleet through December 31, 2019, effective from January 1, 2018. The new management fees, excluding drydocking expenses which are reimbursed at cost by Navios Partners, are: (a) $4.23 daily rate per Ultra-Handymax vessel; (b) $4.33 daily rate per Panamax vessel; (c) $5.25 daily rate per Capesize vessel; (d) $6.70 daily rate per Containership of TEU 6,800; (e) $7.40 daily rate per Containership of more than TEU 8,000 and (f) $8.75 daily rate per very large Containership of more than TEU 13,000. Drydocking expenses under this agreement are reimbursed by Navios Partners at cost at occurrence. Effective from August 31, 2016, Navios Partners could, upon request to Navios Holdings, partially or fully defer the reimbursement of drydocking and other extraordinary fees and expenses under the Management Agreement to a later date, but not later than January 5, 2018, and if reimbursed on a later date, such amounts would bear interest at a rate of 1% per annum over LIBOR. Total management fees for each of the years ended December 31, 2018, 2017 and 2016, including Navios Containers management fees for the period from April 28, 2017 (date of Navios Containers’ inception) to August 29, 2017, amounted to $68,871, $67,310 and $59,209, respectively. General and administrative expenses: Pursuant to the Administrative Services Agreement, the Manager also provides administrative services to Navios Partners, which include bookkeeping, audit and accounting services, legal and insurance services, administrative and clerical services, banking and financial services, advisory services, client and investor relations and other. The Manager is reimbursed for reasonable costs and expenses incurred in connection with the provision of these services. Navios Partners extended the duration of its existing Administrative Services Agreement with the Manager, until December 31, 2022. Total general and administrative expenses charged by Navios Holdings for each of the years ended December 31, 2018, 2017 and 2016, including Navios Containers administrative expenses for the period from April 28, 2017 (date of Navios Containers’ inception) to August 29, 2017, amounted to $9,344, $8,877 and $7,751, respectively. Balance due from related parties (excluding Navios Europe I and Navios Europe II): Balance due from related parties as of December 31, 2018 and December 31, 2017 amounted to $52,252 and $43,146, respectively, of which for the year ended December 31, 2018, the current receivable was $28,562 and the long-term receivable was $28,880. The balance mainly consisted of management fees and drydocking expenses including amounts needed for compliance with IMO regulations prepaid to Navios Holdings in accordance with the Management service agreement and the Navios Holdings Guarantee of up to $20,000. The claim amounted to $17,612 as of December 31, 2018. Vessel Chartering: In November 2016, Navios Partners entered into a charter with a subsidiary of Navios Holdings for the Navios Fulvia, a 2010-built Capesize vessel. The term of this charter is approximately three months that commenced in November 2016, at a net daily rate of $11.5. The vessel was redelivered in February 2017. Total revenue of Navios Partners from the subsidiaries of Navios Holdings for the years ended December 31, 2018, 2017 and 2016 amounted to $97, $654 and $1,939, respectively. Registration Rights Agreement: On February 4, 2015, we completed a private placement to Navios Holdings of 1,120,547 common units and 22,868 general partner units, raising gross proceeds of $14,967 and in connection with such private placement, we entered into a registration rights agreement with Navios Holdings pursuant to which we provide Navios Holdings with certain rights relating to the registration of the common units. Balance due from Navios Europe I: Navios Holdings, Navios Acquisition and Navios Partners have made available to Navios Europe I revolving loans of up to $24,100 to fund working capital requirements (collectively, the “Navios Revolving Loans I”). In December 2018, the amount of funds available under the Navios Revolving Loans I was increased by $30,000 (see Note 20 — Investment in Affiliates). The Navios Revolving Loans I and the Navios Term Loans I earn interest and an annual preferred return at 12.7% per annum, on a quarterly compounding basis and are repaid from free cash flow (as defined in the loan agreement) to the fullest extent possible at the end of each quarter. As of December 31, 2018, Navios Partners’ portion of the outstanding amount relating to the portion of the investment in Navios Europe I (5.0% of the $10,000) was $500, under the caption “Investment in affiliates” and the outstanding amount relating to the Navios Revolving Loans I capital was $11,205 (December 31, 2017: $1,205), under the caption “Loans receivable from affiliates”. The accrued interest income earned under the Navios Revolving Loans I was $731 (December 31, 2017: $489) under the caption “Balance due from related parties” and the accrued interest income earned under the Navios Term Loans I was $447 (December 31, 2017: $334) under the caption “Loans receivable from affiliates”. As of December 31, 2018, the amount undrawn under the Navios Revolving Loans I was $12,000, of which Navios Partners may be required to fund an amount ranging from $0 to $12,000. Balance due from Navios Europe II: Navios Holdings, Navios Acquisition and Navios Partners have made available to Navios Europe II revolving loans of up to $43,500 to fund working capital requirements (collectively, the “Navios Revolving Loans II”). In March 2017, the amount of funds available under the Navios Revolving Loans II was increased by $14,000 (see Note 20 — Investment in Affiliates). The Navios Revolving Loans II and the Navios Term Loans II earn interest and an annual preferred return at 18% per annum, on a quarterly compounding basis and are repaid from free cash flow (as defined in the loan agreement) to the fullest extent possible at the end of each quarter. As of December 31, 2018, Navios Partners’ portion of the outstanding amount relating to the portion of the investment in Navios Europe II (5.0% of the $14,000) was $700, under the caption “Investment in affiliates” and the outstanding amount relating to the Navios Revolving Loans II capital was $15,397 (December 31, 2017: $9,772), under the caption “Loans receivable from affiliates”. The accrued interest income earned under the Navios Revolving Loans II was $4,459 (December 31, 2017: $1,801) under the caption “Balance due from related parties” and the accrued interest income earned under the Navios Term Loans II was $608 (December 31, 2017: $395) under the caption “Loans receivable from affiliates”. As of December 31, 2018, the amount undrawn under the Navios Revolving Loans II was $4,503, of which Navios Partners may be required to fund an amount ranging from $0 to $4,503. Note receivable from affiliates: On March 17, 2017, Navios Holdings transferred to Navios Partners its rights to the fixed 12.7% interest on the Navios Europe I’s Navios Term Loans I and Navios Revolving Loans I (including the respective accrued receivable interest) in the amount of $33,473, which included a cash consideration of $4,050 and 13,076,923 newly issued common units of Navios Partners. At the date of this transaction, the Company recognized a receivable at the fair value of its newly issued common units totaling $29,423 based on the closing price of $2.25 per unit as of March 16, 2017 given as consideration (see Note 13 — Issuance of Units). The receivable relating to the consideration settled with the issuance of 13,076,923 Navios Partners’ common units in the amount of $29,423 has been classified contra equity within the Consolidated Statements of Changes in Partners’ Capital as “Note receivable”. The receivable from Navios Holdings is payable on maturity in December 2023 and Navios Partners will receive approximately $50,937. Interest will accrue through maturity and will be recognized within “Interest income” for the receivable relating to the cash consideration of $4,050. As of December 31, 2018, the long-term note receivable from Navios Holdings amounted to $4,525 (including the non-cash interest income of $475), presented under the caption “Note receivable from affiliates”. Navios Partners may require Navios Holdings, under certain conditions, to repurchase the loans after the third anniversary of the date of the transaction based on the then outstanding balance of the loans. Others: Navios Partners has entered into an omnibus agreement with Navios Holdings (the “Partners Omnibus Agreement”) in connection with the closing of Navios Partners’ IPO governing, among other things, when Navios Holdings and Navios Partners may compete against each other as well as rights of first offer on certain drybulk carriers. Pursuant to the Partners Omnibus Agreement, Navios Partners generally agreed not to acquire or own Panamax or Capesize drybulk carriers under time charters of three or more years without the consent of an independent committee of Navios Partners. In addition, Navios Holdings has agreed to offer to Navios Partners the opportunity to purchase vessels from Navios Holdings when such vessels are fixed under time charters of three or more years. Navios Partners entered into an omnibus agreement with Navios Acquisition and Navios Holdings (the “Acquisition Omnibus Agreement”) in connection with the closing of Navios Acquisition’s initial vessel acquisition, pursuant to which, among other things, Navios Holdings and Navios Partners agreed not to acquire, charter-in or own liquid shipment vessels, except for containerships and vessels that are primarily employed in operations in South America, without the consent of an independent committee of Navios Acquisition. In addition, Navios Acquisition, under the Acquisition Omnibus Agreement, agreed to cause its subsidiaries not to acquire, own, operate or charter drybulk carriers subject to specific exceptions. Under the Acquisition Omnibus Agreement, Navios Acquisition and its subsidiaries granted to Navios Holdings and Navios Partners, a right of first offer on any proposed sale, transfer or other disposition of any of its drybulk carriers and related charters owned or acquired by Navios Acquisition. Likewise, Navios Holdings and Navios Partners agreed to grant a similar right of first offer to Navios Acquisition for any liquid shipment vessels it might own. These rights of first offer will not apply to a (i) sale, transfer or other disposition of vessels between any affiliated subsidiaries, or pursuant to the terms of any charter or other agreement with a counterparty, or (ii) merger with or into, or sale of substantially all of the assets to, an unaffiliated third party. In connection with the Navios Midstream initial public offering and effective November 18, 2014, Navios Partners entered into an omnibus agreement with Navios Midstream, Navios Acquisition and Navios Holdings pursuant to which Navios Acquisition, Navios Holdings and Navios Partners have agreed not to acquire or own any VLCCs, crude oil tankers, refined petroleum product tankers, LPG tankers or chemical tankers under time charters of five or more years and also providing rights of first offer on certain tanker vessels. In connection with the Navios Containers private placement and listing on the N-OTC market effective June 8, 2017, Navios Partners entered into an omnibus agreement with Navios Containers, Navios Holdings, Navios Acquisition and Navios Midstream, pursuant to which Navios Partners, Navios Holdings, Navios Acquisition and Navios Midstream have granted to Navios Containers a right of first refusal over any containerships to be sold or acquired in the future. The omnibus agreement contains significant exceptions that will allow Navios Partners, Navios Holdings, Navios Acquisition and Navios Midstream to compete with Navios Containers under specified circumstances. On November 15, 2012 (as amended in March 2014), Navios Holdings and Navios Partners entered into an agreement (the “Navios Holdings Guarantee”) by which Navios Holdings will provide supplemental credit default insurance with a maximum cash payment of $20,000. The final settlement of the amount due will take place at any time but in no case later than December 31, 2019, in accordance with a letter of agreement effective as of December 29, 2017. During the year ended December 31, 2018, the Company did not submit any claims to Navios Holdings for charterers’ default under this agreement. During the years ended December 31, 2017 and 2016, the Company submitted claims for charterers’ default under this agreement to Navios Holdings for a total amount of $7,242 and $9,153, respectively, net of applicable deductions, of which $7,623 and $9,635 was recorded as “Other income”. Net of the $2,000 write down, the claim amounted to $17,612, including accrued interest and discount unwinding of $389 for the year ended December 31, 2018, presented under the caption “Amounts due from related parties-short term” in the Consolidated Balance Sheets. As of December 31, 2018, Navios Holdings held an 18.0% common unit interest in Navios Partners, represented by 31,053,233 common units and it also held a general partner interest of 2.0%.

Notes Receivable	12 Months Ended
Notes Receivable	Dec. 31, 2018
Disclosure Text Block [Abstract]
Notes Receivable	NOTE 19 – NOTES RECEIVABLE On July 15, 2016, the Company entered into a charter restructuring agreement for the reduction of the hire rate for five Containerships chartered out to Hyundai Merchant Marine Co. (“HMM”) which resulted in a decrease in cash charter hire to be received of approximately $38,461. More specifically, the reduction of the hire rate will be applied as follows: • With effect from (and including) July 18, 2016 until (and including) December 31, 2019, hire rate shall be reduced to $24,400 per day pro rata. • With effect from (and including) January 1, 2020, hire rate shall be restored to the rate of $30,500 per day pro rata until redelivery. In exchange for the reduction of the hire rate, the Company received (i) $7,692 on principal amount of senior, unsecured notes, amortizing subject to available cash flows, accruing interest at 3% per annum payable on maturity in July 2024 and (ii) 3,657 freely tradable securities of HMM (publicly traded at the Stock Market Division of the Korean Exchange). On July 18, 2016, the Company recognized the fair value of the HMM securities totaling $40,277 and also recognized the fair value of the senior unsecured notes totaling $5,931. The total fair value of the non-cash compensation received was recognized as deferred revenue, which will be amortized over the remaining duration of the each time charter. The Company recognized non-cash interest income and discount unwinding totaling to $420, $410 and $180, respectively, for these instruments under the caption “Interest income” in the Consolidated Statements of Operations for each of the years ended December 31, 2018, 2017 and 2016, respectively. As of December 31, 2018 and December 31, 2017, the outstanding balance of the notes receivable, including accrued interest and discount unwinding, amounted to $6,942 and $6,522, respectively. For each of the years ended December 31, 2018, 2017 and 2016, the Company recorded an amount of $12,102, $12,102 and $5,537, respectively, of deferred revenue amortization in the Consolidated Statements of Operations under the caption “Time charter and voyage revenues”. As of December 31, 2018, the outstanding balances of the current and non-current portion of deferred revenue in relation to HMM amounted to $12,101 and $4,366, respectively. As of December 31, 2017, the outstanding balances of the current and non-current portion of deferred revenue in relation to HMM amounted to $12,102 and $16,468, respectively. During August 2016, the Company sold all the shares for net proceeds on sale of $20,842 resulting in a loss on sale of $19,435, which was presented under the caption “Loss on sale of securities” in the Consolidated Statements of Operations for the year ended December 31, 2016 and the proceeds were classified as investing activities in the Consolidated Statements of Cash Flows for the year ended December 31, 2016. On January 12, 2017, the Company sold the vessel the MSC Cristina (see Note 7 — Vessels, net) for a gross sale price of $126,000 and received a cash payment of $107,250 and a note receivable of $18,750 accruing interest at 6% per annum payable in 16 quarterly instalments. As of December 31, 2018, the outstanding balances of the current and non-current note receivable amounted to $4,688 and $4,687, respectively. For each of the years ended December 31, 2018 and 2017, the Company recorded interest income of $710 and $961, respectively, including accrued interest income of $76 and $115 under the caption “Interest income” in the Consolidated Statements of Operations.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Investment In Affiliates

12 Months Ended

Dec. 31, 2018

INVESTMENTS IN AFFILIATES [Abstract]

Investment in Affiliates

NOTE 20 – INVESTMENT IN AFFILIATES

Navios Europe I: On October 9, 2013, Navios Holdings, Navios Acquisition and Navios Partners established Navios Europe I and have ownership interests of 47.5%, 47.5% and 5.0%, respectively. On December 18, 2013, Navios Europe I acquired ten vessels for aggregate consideration consisting of: (i) cash which was funded with the proceeds of senior loan facilities (the “Senior Loans I”) and loans aggregating $10,000 from Navios Holdings, Navios Acquisition and Navios Partners (collectively, the “Navios Term Loans I”) and (ii) the assumption of a junior participating loan facility (the “Junior Loan I”). In addition to the Navios Term Loans I, Navios Holdings, Navios Acquisition and Navios Partners have made available to Navios Europe I revolving loans of up to $24,100 to fund working capital requirements (collectively, the “Navios Revolving Loans I”). In December 2018, the availability under the Revolving Loans I was increased by $30,000.

On an ongoing basis, Navios Europe I is required to distribute cash flows (after payment of operating expenses and amounts due pursuant to the terms of the Senior Loans I and repayments of the Navios Revolving Loans I) according to a defined waterfall calculation. Navios Partners evaluated its investment in Navios Europe I under ASC 810 and concluded that Navios Europe I is a variable interest entity (“VIE”) and that they are not the party most closely associated with Navios Europe I and, accordingly, is not the primary beneficiary of Navios Europe I. Navios Partners further evaluated its investment in the common stock of Navios Europe I under ASC 323 and concluded that it has the ability to exercise significant influence over the operating and financial policies of Navios Europe I and, therefore, its investment in Navios Europe I is accounted for under the equity method.

As of December 31, 2018 and December 31, 2017, the estimated maximum potential loss by Navios Partners in Navios Europe I would have been $11,705 and $1,705, respectively, excluding accrued interest which represents the Company’s carrying value of the investment of $500 as of December 31, 2018 (December 31, 2017: $500) plus the Company’s balance of the Navios Revolving Loans I of $11,205 as of December 31, 2018 (December 31, 2017: $1,205), excluding accrued interest, and does not include the undrawn portion of the Navios Revolving Loans I.

As of December 31, 2018, the Navios Partners’ portion of the Navios Revolving Loan I outstanding was $11,205. No investment income was recognized for the year ended December 31, 2018. Investment loss of $(140) was recognized in the Consolidated Statements of Operations under the caption of “Equity in net earnings of affiliated companies” for the year ended December 31, 2017.

Navios Europe II: On February 18, 2015, Navios Holdings, Navios Acquisition and Navios Partners established Navios Europe II and have ownership interests of 47.5%, 47.5% and 5.0%, respectively. From June 8, 2015 through December 31, 2015, Navios Europe II acquired fourteen vessels for aggregate consideration consisting of: (i) cash consideration of $145,550 (which was funded with the proceeds of a $131,550 senior loan facilities net of loan discount amounting to $3,375 (the “Senior Loans II”) and loans aggregating $14,000 from Navios Holdings, Navios Acquisition and Navios Partners (collectively, the “Navios Term Loans II”); and (ii) the assumption of a junior participating loan facility (the “Junior Loan II”) with a face amount of $182,150 and fair value of $99,147, at the acquisition date. In addition to the Navios Term Loans II, Navios Holdings, Navios Acquisition and Navios Partners have also made available to Navios Europe II revolving loans up to $43,500 to fund working capital requirements (collectively, the “Navios Revolving Loans II”). In March 2017, the amount of funds available under the Navios Revolving Loans II was increased by $14,000.

On an ongoing basis, Navios Europe II is required to distribute cash flows (after payment of operating expenses, amounts due pursuant to the terms of the Senior Loans and repayments of the Navios Revolving Loans II) according to a defined waterfall calculation. Navios Partners evaluated its investment in Navios Europe II under ASC 810 and concluded that Navios Europe II is a variable interest entity (“VIE”) and that it is not the party most closely associated with Navios Europe II and, accordingly, is not the primary beneficiary of Navios Europe II. Navios Partners further evaluated its investment in the common stock of Navios Europe II under ASC 323 and concluded that it has the ability to exercise significant influence over the operating and financial policies of Navios Europe II and, therefore, its investment in Navios Europe II is accounted for under the equity method.

As of December 31, 2018 and December 31, 2017, the estimated maximum potential loss by Navios Partners in Navios Europe II would have been $16,097 and $10,472, respectively, excluding accrued interest, which represents the Company’s carrying value of the investment of $700 as of December 31, 2018 (December 31, 2017: $700) plus the Company’s balance of the Navios Revolving Loans II of $15,397 as of December 31, 2018 (December 31, 2017: $9,772), excluding accrued interest, and does not include the undrawn portion of the Navios Revolving Loans II.

As of December 31, 2018, the Navios Partners’ portion of the Navios Revolving Loan II outstanding was $15,397. No investment income was recognized for year ended December 31, 2018. Investment income of $84 was recognized in the Consolidated Statements of Operations under the caption of “Equity in net earnings of affiliated companies” for the year ended December 31, 2017.

Navios Containers: On June 8, 2017, Navios Containers closed its private placement and issued 10,057,645 shares for $50,288 of gross proceeds at a subscription price of $5.00 per share. Navios Partners invested $30,000 and received 6,000,000 shares, and Navios Holdings invested $5,000 and received 1,000,000 shares. Each of Navios Partners and Navios Holdings also received warrants, with a five-year term, for 6.8% and 1.7% of the equity, respectively. On August 29, 2017, Navios Containers closed its private placement and issued 10,000,000 shares for $50,000 of gross proceeds at a subscription price of $5.00 per share. Navios Partners invested $10,000 and received 2,000,000 shares. Navios Partners also received warrants, with a five-year term, for 6.8% of the equity. On November 9, 2017, Navios Containers closed a private placement of 9,090,909 shares at a subscription price of $5.50 per share, resulting in gross proceeds of approximately $50,000. Navios Partners invested $10,000 and received 1,818,182 shares. Navios Partners also received warrants, with a five-year term, for 6.8% of the newly issued equity. On March 13, 2018, Navios Containers closed a private placement of 5,454,546 shares at a subscription price of $5.50 per share, resulting in gross proceeds of approximately $30,000. Navios Partners invested $14,460 and received 2,629,095 shares and Navios Holdings invested $500 and received 90,909 shares. Navios Partners and Navios Holdings also received 9,273 warrants, with a five-year term, respectively.

On December 3, 2018, Navios Partners distributed 855,001 units of Navios Containers to the unitholders of Navios Partners, approximately 2.5% of the Navios Containers’ outstanding equity. In connection with this transaction, Navios Partners recognized an other-than-temporary impairment of $560 on the units distributed, which was presented under the caption “Equity in net earnings of affiliated companies” in the Consolidated Statements of Operations. The amount of the distribution was $4,243 based on the last trading price of Navios Containers’ shares in the N-OTC market as of November 23, 2018. Following the distribution, Navios Partners owns approximately 33.5% of the equity in Navios Containers.

As of December 31, 2018, Navios Partners held 11,592,276 common units and Navios Holdings held 1,263,276 common units of Navios Containers. Investment income of $3,957 and $922 was recognized in the Consolidated Statements of Operations under the caption of “Equity in net earnings of affiliated companies” for each of the years ended December 31, 2018 and 2017, respectively.

The fair value of Navios Partners’ equity investment in Navios Containers is based on unadjusted quoted prices in active markets for Navios Containers’ common units. The fair value of Navios Partners’ equity investment in Navios Containers as at December 31, 2018 and 2017 was $32,806 and $57,566, respectively, compared with its carrying value of $65,096 and $50,922, respectively. Based on Navios Partners’ evaluation of the duration and magnitude of the fair value decline, Navios Containers’ financial condition and near-term prospects, and Navios Partners’ intent and ability to hold its investment in Navios Containers until recovery, Navios Partners concluded that the decline in fair value of its investment in Navios Containers below its carrying value is temporary and, therefore, no impairment was recorded.

Following the results of the significant tests performed by the Company, it was concluded that one affiliate met the significant threshold requiring summarized financial information to be presented.

	Navios Containers
	December 31, 2018	December 31, 2017
Balance Sheet
Cash and cash equivalents, including restricted cash	$18,892	$14,501
Current assets	6,245	6,870
Non-current assets	388,390	245,440
Current liabilities	19,758	7,060
Long-term debt including current portion, net	133,196	119,033
Non-current liabilities	78,100	—

	Navios Containers
	Year ended December 31, 2018	Period from April 28, 2017 (date of inception) to December 31, 2017
Income Statement
Revenue	$133,921	$39,188
Net income	$12,700	$2,638

Cash Distributions and Earnings per Unit

12 Months Ended

Dec. 31, 2018

CASH DISTRIBUTIONS AND EARNINGS PER UNIT [Abstract]

Cash Distributions and Earnings Per Unit

NOTE 21 – CASH DISTRIBUTIONS AND EARNINGS PER UNIT

Navios Partners intends to make distributions to the holders of common and general partner units on a quarterly basis, to the extent and as may be declared by the Board and to the extent it has sufficient cash on hand to pay the distribution after the Company establishes cash reserves and pays fees and expenses. There is no guarantee that Navios Partners will pay a quarterly distribution on the common and general partner units in any quarter. On February 3, 2016, Navios Partners announced that its Board of Directors decided to suspend the quarterly cash distributions to its unitholders, including the distribution for the quarter ended December 31, 2015. In March 2018, the board determined to reinstate a distribution and any continued distribution will be at the discretion of our Board of Directors, taking into consideration the terms of its partnership agreement. The Company is prohibited from making any distributions to unitholders if it would cause an event of default, or an event of default exists, under its existing credit facilities.

There is incentive distribution rights held by the General Partner, which are analyzed as follows:

		Marginal Percentage Interest in Distributions
	Total Quarterly Distribution Target Amount	Common Unitholders	General Partner
Minimum Quarterly Distribution	up to $ 0.35	98%	2%
First Target Distribution	up to $ 0.4025	98%	2%
Second Target Distribution	above $ 0.4025 up to $0.4375	85%	15%
Third Target Distribution	above $ 0.4375 up to $0.525	75%	25%
Thereafter	above $ 0.525	50%	50%

The first 98% of the quarterly distribution is paid to all common unitholders. The incentive distributions rights (held by the General Partner) apply only after a minimum quarterly distribution of $0.4025.

In April 2018, the Board of Directors of Navios Partners authorized its quarterly cash distribution for the three month period ended March 31, 2018 of $0.02 per unit. The distribution was paid on May 14, 2018 to all unitholders of common and general partner units of record as of May 10, 2018. The aggregate amount of the declared distribution was $3,420.

In July 2018, the Board of Directors of Navios Partners authorized its quarterly cash distribution for the three month period ended June 30, 2018 of $0.02 per unit. The distribution was paid on August 10, 2018 to all unitholders of common and general partner units of record as of August 7, 2018. The aggregate amount of the declared distribution was $3,420.

In October 2018, the Board of Directors of Navios Partners authorized its quarterly cash distribution for the three month period ended September 30, 2018 of $0.02 per unit. The distribution was paid on November 14, 2018 to all unitholders of common and general partners units of record as of November 7, 2018. The aggregate amount of the declared distribution was $3,420.

In January 2019, the Board of Directors of Navios Partners authorized its quarterly cash distribution for the three month period ended December 31, 2018 of $0.02 per unit. The distribution was paid on February 14, 2019 to all unitholders of common and general partner units of record as of February 11, 2019, which included the unitholders of restricted common units issued on February 1, 2019. The aggregate amount of the declared distribution was $3,458.

Navios Partners calculates earnings per unit by allocating reported net income for each period to each class of units based on the distribution waterfall for available cash specified in Navios Partners’ partnership agreement, net of the unallocated earnings (or losses). Basic earnings/(losses) per unit is determined by dividing net income/(loss) attributable to Navios Partners common unitholders by the weighted average number of common units outstanding during the period. Diluted earnings per unit is calculated in the same manner as basic earnings per unit, except that the weighted average number of outstanding units increased to include the dilutive effect of outstanding unit options or phantom units. Net loss per unit undistributed is determined by taking the distributions in excess of net income and allocating between common units and general partner units on a 98%-2% basis. There were no options or phantom units outstanding during each of the years ended December 31, 2018, 2017 and 2016.

The calculations of the basic and diluted earnings per unit are presented below.

	Year Ended December 31, 2018	Year Ended December 31, 2017	Year Ended December 31, 2016
Net loss	$ (13,081)	$ (15,090)	$ (52,549)
Loss attributable to:
Common unitholders	$ (12,819)	$ (14,788)	$ (51,498)
Weighted average units outstanding (basic and diluted)
Common unitholders	162,353,865	132,610,330	83,107,066
Loss per unit (basic and diluted):
Common unitholders	$ (0.08)	$ (0.11)	$ (0.62)
Earnings per unit — distributed (basic and diluted):
Common unitholders	$ 0.08	—	—
Loss per unit — undistributed (basic and diluted):
Common unitholders	$ (0.16)	$ (0.11)	$ (0.62)

Potential common units of 3,154,112 and 1,353,335 relating to unvested restricted common units for each of the years ended December 31, 2018 and 2017, respectively, have an anti-dilutive effect (i.e. those that increase income per unit or decrease loss per unit) and are therefore excluded from the calculation of diluted earnings per unit.

Other Income	12 Months Ended
Other Income	Dec. 31, 2018
OTHER INCOME [Abstract]
Other Income	NOTE 22 – OTHER INCOME On November 15, 2012 (as amended in March 2014), Navios Holdings and Navios Partners entered into an agreement (the “Navios Holdings Guarantee”) by which Navios Holdings will provide supplemental credit default insurance with a maximum cash payment of $20,000. The final settlement of the amount due will take place at any time but in no case later than December 31, 2019, in accordance with a letter of agreement effective as of December 29, 2017. During the year ended December 31, 2018, the Company did not submit any claims to Navios Holdings for charterers’ default under this agreement. During the years ended December 31, 2017 and 2016, the Company submitted claims for charterers’ default under this agreement to Navios Holdings for a total amount of $7,242 and $9,153, respectively, net of applicable deductions, of which $7,623 and $9,635 was recorded as “Other income”. Net of the $2,000 write down, the claim amounted to $17,612, including accrued interest and discount unwinding of $389 for the year ended December 31, 2018, presented under the caption “Amounts due from related parties-short term” in the Consolidated Balance Sheets. On November 10, 2016, Navios Partners repaid $28,052 in cash for the settlement of a nominal amount of $30,192 of the July 2012 Credit Facility achieving a $2,140 gain on debt repayment

Other Expense	12 Months Ended
Other Expense	Dec. 31, 2018
Other Expense [Abstract]
Other Expense	NOTE 23 – OTHER EXPENSE As of December 31, 2018, the amount of $2,000 related to the write down of the guarantee claim receivable is included under the caption “Other expense” of the Consolidated Statements of Operations. As of December 31, 2018, the amount of $777 related to the discount of the Navios Holdings Guarantee is included under the caption “Other expense” of the Consolidated Statements of Operations. As of December 31, 2017, the amount of $1,495 relating to an allowance for doubtful accounts is included in under the caption “Other expense” of the Consolidated Statements of Operations. On January 12, 2017, Navios Partners sold the MSC Cristina, which was classified as held for sale as of December 31, 2016, to an unrelated third party. The carrying value of the vessel was $125,000 and sale proceeds less costs to sell totaled $123,740. As of December 31, 2017, a loss of $1,260 had been recognized under the caption “Other expense” of the Consolidated Statements of Operations.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2018
SUBSEQUENT EVENTS [Abstract]
Subsequent Events	NOTE 24 – SUBSEQUENT EVENTS On April 5, 2019, Navios Partners prepaid $21,000 and released two vessels from the collateral package of the Term Loan B Facility. On April 5, 2019, Navios Partners entered into a new credit facility with DNB Bank ASA (the “April 2019 Credit Facility”) of up to $40,000 (divided into two tranches) in order to refinance two Capesize vessels. The credit facility has a term of approximately 5.0 years and bears interest at LIBOR plus 275 bps per annum. No amount has yet been drawn under this facility. On March 21, 2019, Navios Partners agreed to sell the Navios Galaxy I, a 2001-built Panamax vessel of 74,195 dwt, to an unrelated third party, for a net sale price of approximately $5,978. The sale is expected to be completed by the end of April 2019. In February 2019, Navios Partners was required to fund the amount of $4,000 under Navios Europe I’s Revolving Loan. On February 12, 2019, Navios Partners entered into a new credit facility with DVB Bank S.E. (the “February 2019 Credit Facility”) of up to $66,000 (divided into four tranches) in order to refinance four Capesize vessels. The credit facility has a term of approximately 5.0 years and bears interest at LIBOR plus 260 bps per annum. No amount has yet been drawn under this facility. In January 2019, the Board of Directors of Navios Partners authorized a common unit repurchase program for up to $50,000 of the Company’s common units over a two year period. Common unit repurchases will be made from time to time for cash in open market transactions at prevailing market prices or in privately negotiated transactions. The timing and amount of repurchases under the program will be determined by Navios Partners’ management based upon market conditions and other factors. Repurchases may be made pursuant to a program adopted under Rule 10b5-1 under the Securities Exchange Act of 2 1934, as amended. The program does not require any minimum repurchase or any specific number of common units and may be suspended or reinstated at any time in the Company’s discretion and without notice. The Board of Directors will review the program periodically. Repurchases will be subject to restrictions under the Company’s credit facilities. In January 2019, the Board of Directors of Navios Partners authorized its quarterly cash distribution for the three month period ended December 31, 2018 of $0.02 per unit. The distribution was paid on February 14, 2019 to all unitholders of common and general partner units of record as of February 11, 2019, which included the unitholders of restricted common units issued on February 1, 2019. The aggregate amount of the declared distribution was $3,458.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Basis Of Presentation

(a) Basis of presentation: The accompanying consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP).

Principles Of Consolidation

The accompanying consolidated financial statements include the following entities:

		Country of	Statements of Operations
Company name	Vessel name	incorporation	2018	2017	2016
Libra Shipping Enterprises Corporation(5)	Navios Libra II	Marshall Is.	1/01 – 12/14	1/01 – 12/31	1/01 – 12/31
Alegria Shipping Corporation	Navios Alegria	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Felicity Shipping Corporation(6)	Navios Felicity	Marshall Is.	1/01 – 12/04	1/01 – 12/31	1/01 – 12/31
Gemini Shipping Corporation(1)	Navios Gemini S	Marshall Is.	—	1/01 – 12/21	1/01 – 12/31
Galaxy Shipping Corporation	Navios Galaxy I	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Aurora Shipping Enterprises Ltd.	Navios Hope	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Palermo Shipping S.A.(2)	Navios Apollon	Marshall Is.	—	1/01 – 4/21	1/01 – 12/31
Fantastiks Shipping Corporation	Navios Fantastiks	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Sagittarius Shipping Corporation	Navios Sagittarius	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Hyperion Enterprises Inc.	Navios Hyperion	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Chilali Corp.	Navios Aurora II	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Surf Maritime Co.	Navios Pollux	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Pandora Marine Inc.	Navios Melodia	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Customized Development S.A.	Navios Fulvia	Liberia	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Kohylia Shipmanagement S.A.	Navios Luz	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Orbiter Shipping Corp.	Navios Orbiter	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Floral Marine Ltd.	Navios Buena Ventura	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Golem Navigation Limited	Navios Soleil	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Kymata Shipping Co.	Navios Helios	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Joy Shipping Corporation	Navios Joy	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Micaela Shipping Corporation	Navios Harmony	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Pearl Shipping Corporation	Navios Sun	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Velvet Shipping Corporation	Navios La Paix	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Perigiali Navigation Limited	Navios Beaufiks	Marshall Is.	1/01 – 12/31	1/01 – 12/31	12/30 – 12/31
Finian Navigation Co.	Navios Ace	Marshall Is.	1/01 – 12/31	6/09 – 12/31	—
Ammos Shipping Corp.	Navios Prosperity I	Marshall Is.	1/01 – 12/31	6/07 – 12/31	—
Wave Shipping Corp.	Navios Libertas	Marshall Is.	1/01 – 12/31	7/10 – 12/31	—
Casual Shipholding Co.	Navios Sol	Marshall Is.	1/01 – 12/31	7/17 – 12/31	—
Avery Shipping Company	Navios Symphony	Marshall Is.	1/01 – 12/31	9/20 – 12/31	—
Coasters Ventures Ltd.	Navios Christine B	Marshall Is.	1/01 – 12/31	8/11 – 12/31	—
Ianthe Maritime S.A.	Navios Aster	Marshall Is.	1/01 – 12/31	8/21 – 12/31	—
Rubina Shipping Corporation	Hyundai Hongkong	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Topaz Shipping Corporation	Hyundai Singapore	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Beryl Shipping Corporation	Hyundai Tokyo	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Cheryl Shipping Corporation	Hyundai Shanghai	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Christal Shipping Corporation	Hyundai Busan	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Fairy Shipping Corporation(3)	YM Utmost	Marshall Is.	1/01 – 7/02	1/01 – 12/31	1/01 – 12/31
Limestone Shipping Corporation(3)	YM Unity	Marshall Is.	1/01 – 7/02	1/01 – 12/31	1/01 – 12/31
Dune Shipping Corp.(4)	MSC Cristina	Marshall Is.	—	1/01 – 1/12	1/01 – 12/31
Citrine Shipping Corporation	—	Marshall Is.	—	—	—
Cavalli Navigation Inc.	—	Marshall Is.	—	—	—
Seymour Trading Limited	Navios Altair I	Marshall Is.	6/07 – 12/31	—	—
Goldie Services Company	Navios Symmetry	Marshall Is.	5/21 – 12/31	—	—
Andromeda Shiptrade Limited	Navios Apollon I	Marshall Is.	5/09 – 12/31	—	—
Esmeralda Shipping Corporation	Navios Sphera	Marshall Is.	8/31 – 12/31	—	—
Triangle Shipping Corporation	Navios Mars	Marshall Is.	8/31 – 12/31	—	—
Chartered-in vessels
Cavos Navigation Co.	Navios Libra	Marshall Is.	—	—	—
Other
Prosperity Shipping Corporation	—	Marshall Is.	—	—	—
Aldebaran Shipping Corporation	—	Marshall Is.	—	—	—
JTC Shipping and Trading Ltd.(7)	Holding Company	Malta	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Maritime Partners L.P.	N/A	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Maritime Operating LLC.	N/A	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Partners Finance (US) Inc.	Co-Borrower	Delaware	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Partners Europe Finance Inc.	Sub-Holding Company	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31

(1) The vessel was sold on December 21, 2017 (see Note 7 – Vessels, net). (2) The vessel was sold on April 21, 2017 (see Note 7 – Vessels, net). (3) The vessels were sold on July 2, 2018 (see Note 7 – Vessels, net). (4) The vessel was sold on January 12, 2017 (see Note 7 – Vessels, net). (5) The vessel was sold on December 14, 2018 (see Note 7 – Vessels, net). (6) The vessel was sold on December 4, 2018 (see Note 7 – Vessels, net). (7) Not a vessel-owning subsidiary and only holds right to charter-in contracts.

Use Of Estimates

Cash And Cash Equivalents

Restricted Cash

Accounts Receivable, Net

Inventories

(g) Inventories: Inventories, which are comprised of bunkers due to freight voyages, are valued at cost as determined on the first-in, first-out basis.

Vessels, Net

Expenditures for routine maintenance and repairs are expensed as incurred.

Asset Held For Sale

Impairment Of Long Lived Assets

Deferred Drydock And Special Survey Costs

Deferred Financing Cost

Investments In Equity Securities

Intangible Assets And Liabilities

Foreign Currency Translation

Provisions

Segment Reporting

Revenue and Expense Recognition

Revenue from vessels operating in pooling and profit sharing arrangements amounted to $5,824, $7,877 and $(5,174) for the years ended December 31, 2018, 2017 and 2016, respectively.

Direct Vessel Expenses: Direct vessel expenses comprise the amortization related to drydocking and special survey costs of certain vessels of Navios Partners’ fleet.

Prepaid Voyage Costs: Prepaid voyage costs relate to cash paid in advance for expenses associated with voyages. These amounts are recognized as expenses over the voyage or charter period.

Financial Instruments

Cash Distribution

Available Cash: Generally means, for each fiscal quarter, all cash on hand at the end of the quarter:

•less the amount of cash reserves established by the board of directors to:

•provide for the proper conduct of the business (including reserve for Maintenance and Replacement Capital Expenditures)

•comply with applicable law, any of Navios Partners’ debt instruments, or other agreements; or

•provide funds for distributions to the unitholders and to the general partner for any one or more of the next four quarters;

Stock-Based Compensation

Income Taxes

(Loss)/Earnings Per Unit

Guarantees

Leases

(y) Leases: Vessel leases where Navios Partners is regarded as the lessor are classified as either finance leases or operating leases based on an assessment of the terms of the lease.

For charters classified as operating leases where Navios Partners is regarded as the lessor, refer to Note 2(r).

For charters classified as operating leases where Navios Partners is regarded as the lessee, the expense is recognized on a straight line basis over the rental periods of such charter agreements.

Financial Instruments And Fair Value

Recent Accounting Pronouncements

(aa) Recent Accounting Pronouncements:

have on its disclosures to the consolidated financial statements.

Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Entities included in consolidation

		Country of	Statements of Operations
Company name	Vessel name	incorporation	2018	2017	2016
Libra Shipping Enterprises Corporation(5)	Navios Libra II	Marshall Is.	1/01 – 12/14	1/01 – 12/31	1/01 – 12/31
Alegria Shipping Corporation	Navios Alegria	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Felicity Shipping Corporation(6)	Navios Felicity	Marshall Is.	1/01 – 12/04	1/01 – 12/31	1/01 – 12/31
Gemini Shipping Corporation(1)	Navios Gemini S	Marshall Is.	—	1/01 – 12/21	1/01 – 12/31
Galaxy Shipping Corporation	Navios Galaxy I	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Aurora Shipping Enterprises Ltd.	Navios Hope	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Palermo Shipping S.A.(2)	Navios Apollon	Marshall Is.	—	1/01 – 4/21	1/01 – 12/31
Fantastiks Shipping Corporation	Navios Fantastiks	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Sagittarius Shipping Corporation	Navios Sagittarius	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Hyperion Enterprises Inc.	Navios Hyperion	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Chilali Corp.	Navios Aurora II	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Surf Maritime Co.	Navios Pollux	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Pandora Marine Inc.	Navios Melodia	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Customized Development S.A.	Navios Fulvia	Liberia	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Kohylia Shipmanagement S.A.	Navios Luz	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Orbiter Shipping Corp.	Navios Orbiter	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Floral Marine Ltd.	Navios Buena Ventura	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Golem Navigation Limited	Navios Soleil	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Kymata Shipping Co.	Navios Helios	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Joy Shipping Corporation	Navios Joy	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Micaela Shipping Corporation	Navios Harmony	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Pearl Shipping Corporation	Navios Sun	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Velvet Shipping Corporation	Navios La Paix	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Perigiali Navigation Limited	Navios Beaufiks	Marshall Is.	1/01 – 12/31	1/01 – 12/31	12/30 – 12/31
Finian Navigation Co.	Navios Ace	Marshall Is.	1/01 – 12/31	6/09 – 12/31	—
Ammos Shipping Corp.	Navios Prosperity I	Marshall Is.	1/01 – 12/31	6/07 – 12/31	—
Wave Shipping Corp.	Navios Libertas	Marshall Is.	1/01 – 12/31	7/10 – 12/31	—
Casual Shipholding Co.	Navios Sol	Marshall Is.	1/01 – 12/31	7/17 – 12/31	—
Avery Shipping Company	Navios Symphony	Marshall Is.	1/01 – 12/31	9/20 – 12/31	—
Coasters Ventures Ltd.	Navios Christine B	Marshall Is.	1/01 – 12/31	8/11 – 12/31	—
Ianthe Maritime S.A.	Navios Aster	Marshall Is.	1/01 – 12/31	8/21 – 12/31	—
Rubina Shipping Corporation	Hyundai Hongkong	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Topaz Shipping Corporation	Hyundai Singapore	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Beryl Shipping Corporation	Hyundai Tokyo	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Cheryl Shipping Corporation	Hyundai Shanghai	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Christal Shipping Corporation	Hyundai Busan	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Fairy Shipping Corporation(3)	YM Utmost	Marshall Is.	1/01 – 7/02	1/01 – 12/31	1/01 – 12/31
Limestone Shipping Corporation(3)	YM Unity	Marshall Is.	1/01 – 7/02	1/01 – 12/31	1/01 – 12/31
Dune Shipping Corp.(4)	MSC Cristina	Marshall Is.	—	1/01 – 1/12	1/01 – 12/31
Citrine Shipping Corporation	—	Marshall Is.	—	—	—
Cavalli Navigation Inc.	—	Marshall Is.	—	—	—
Seymour Trading Limited	Navios Altair I	Marshall Is.	6/07 – 12/31	—	—
Goldie Services Company	Navios Symmetry	Marshall Is.	5/21 – 12/31	—	—
Andromeda Shiptrade Limited	Navios Apollon I	Marshall Is.	5/09 – 12/31	—	—
Esmeralda Shipping Corporation	Navios Sphera	Marshall Is.	8/31 – 12/31	—	—
Triangle Shipping Corporation	Navios Mars	Marshall Is.	8/31 – 12/31	—	—
Chartered-in vessels
Cavos Navigation Co.	Navios Libra	Marshall Is.	—	—	—
Other
Prosperity Shipping Corporation	—	Marshall Is.	—	—	—
Aldebaran Shipping Corporation	—	Marshall Is.	—	—	—
JTC Shipping and Trading Ltd.(7)	Holding Company	Malta	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Maritime Partners L.P.	N/A	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Maritime Operating LLC.	N/A	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Partners Finance (US) Inc.	Co-Borrower	Delaware	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31
Navios Partners Europe Finance Inc.	Sub-Holding Company	Marshall Is.	1/01 – 12/31	1/01 – 12/31	1/01 – 12/31

(1) The vessel was sold on December 21, 2017 (see Note 7 – Vessels, net). (2) The vessel was sold on April 21, 2017 (see Note 7 – Vessels, net). (3) The vessels were sold on July 2, 2018 (see Note 7 – Vessels, net). (4) The vessel was sold on January 12, 2017 (see Note 7 – Vessels, net). (5) The vessel was sold on December 14, 2018 (see Note 7 – Vessels, net). (6) The vessel was sold on December 4, 2018 (see Note 7 – Vessels, net). (7) Not a vessel-owning subsidiary and only holds right to charter-in contracts.

Cash and Cash Equivalents (Tables)

12 Months Ended

Dec. 31, 2018

CASH AND CASH EQUIVALENTS [Abstract]

Cash and cash equivalents

	December 31, 2018	December 31, 2017
Cash and cash equivalents	$ 58,590	$ 24,047
Restricted cash	2,865	5,886

Total cash and cash equivalents and restricted cash	$ 61,455	$ 29,933

Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2018

Accounts Receivable Net [Abstract]

Accounts Receivable Lessen By Provision for Doubtful Receivables


	December 31, 2018	December 31, 2017
Accounts receivable	$ 15,931	$ 15,616
Less: Provision for doubtful accounts	(1,495)	(1,495)

Accounts receivable, net	$14,436	$14,121

Changes To Provisions For Doubtful Receivables


Allowance for doubtful receivables	Balance at beginning of period	Charges to costs and expenses	Amount utilized	Balance at end of period
Year ended December 31, 2018	$ (1,495)	$ —	$ —	$ (1,495)
Year ended December 31, 2017	$ —	$ (1,495)	$ —	$ (1,495)
Year ended December 31, 2016	$ —	$ —	$ —	$ —

Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2018

Prepaid Expenses And Other Assets [Abstract]

Prepaid Expenses And Other Current Assets


	December 31, 2018	December 31, 2017
Prepaid voyage costs	$ 134	$ 14
Inventory	1,004	220
Other	757	671

Total prepaid expenses and other current assets	$ 1,895	$ 905

Vessels, Net (Tables)

12 Months Ended

Dec. 31, 2018

VESSELS, NET [Abstract]

Vessels, Net

Vessels	Cost	Accumulated Depreciation	Net Book Value
Balance December 31, 2016	$ 1,354,298	$ (317,092)	$ 1,037,206
Additions	158,241	(56,210)	102,031
Disposals	(26,233)	18,688	(7,545)
Vessel impairment losses	(66,228)	33,551	(32,677)

Balance December 31, 2017	$ 1,420,078	$ (321,063)	$ 1,099,015
Additions	115,902	(54,585)	61,317
Disposals	(76,264)	—	(76,264)
Vessel impairment losses	(99,485)	58,667	(40,818)

Balance December 31, 2018	$ 1,360,231	$ (316,981)	$ 1,043,250

Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

INTANGIBLE ASSETS [Abstract]

Intangible Assets

	Cost	Accumulated Amortization	Net Book Value
Favorable lease terms December 31, 2016	$ 83,716	$ (64,764)	$ 18,952
Additions	—	(10,872)	(10,872)

Favorable lease terms December 31, 2017	$ 83,716	$ (75,636)	$ 8,080
Additions	—	(3,748)	(3,748)

Favorable lease terms December 31, 2018	$ 83,716	$ (79,384)	$ 4,332

Amortization of Favorable Lease Terms


	Year Ended
	December 31, 2018	December 31, 2017	December 31, 2016
Favorable lease terms	$ (3,748)	$ (10,872)	$ (15,861)
Acceleration of favorable lease terms	—	—	(20,526)

Total	$ (3,748)	$ (10,872)	$ (36,387)

Aggregate Amortizations of Intangible Assets

Year	Amount
2019	1,166
2020	1,166
2021	1,166
2022 and thereafter	834

Total	$ 4,332

Accounts Payable (Tables)

12 Months Ended

Dec. 31, 2018

Accounts Payable [Abstract]

Accounts Payable


	December 31, 2018	December 31, 2017
Creditors	$ 1,744	$ 1,099
Brokers	2,262	1,936
Insurances	—	3
Professional and legal fees	833	680

Total accounts payable	$ 4,839	$ 3,718

Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2018

Accrued Expenses [Abstract]

Accrued Expenses


	December 31, 2018	December 31, 2017
Accrued voyage expenses	$ 2,828	$ 1,805
Accrued loan interest	2,244	1,981
Accrued legal and professional fees	252	889
Accrued bonus	110	4,125

Total accrued expenses	$ 5,434	$ 8,800

Borrowings (Tables)

12 Months Ended

Dec. 31, 2018

Borrowings [Abstract]

Borrowings

	December 31, 2018	December 31, 2017
Term Loan B facility	$ 418,538	$ 441,471
Credit facilities	75,671	69,161

Total debt	$ 494,209	$ 510,632
Financial liability	24,842	—

Total borrowings	$ 519,051	$ 510,632
Less: Long-term unamortized discount	(6,629)	(10,824)
Less: Current portion of long-term borrowings, net	(26,804)	(26,586)
Less: Deferred finance costs, net	(4,937)	(6,345)

Long-term borrowings, net	$ 480,681	$ 466,877

Maturities of Long Term Debt

Year	Amount
2019	$ 33,392
2020	414,297
2021	16,230
2022	6,833
2023 and thereafter	48,299

Total	$ 519,051

Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Fair Value Of Financial Instruments [Abstract]

Fair Value Of Financial Instruments

	December 31, 2018		December 31, 2017
	Book Value	Fair Value	Book Value	Fair Value
Cash and cash equivalents	$ 58,590	$ 58,590	$ 24,047	$ 24,047
Restricted cash	$ 2,865	$ 2,865	$ 5,886	$ 5,886
Amounts due from related parties, short-term	$ 28,562	$ 28,562	$ 10,545	$ 10,545
Loans receivable from affiliates	$ 27,657	$ 27,657	$ 11,706	$ 11,706
Amounts due from related parties, long-term	$ 28,880	$ 28,880	$ 34,891	$ 34,891
Notes receivable, net of current portion	$ 11,629	$ 11,629	$ 15,897	$ 15,897
Note receivable from affiliates	$ 4,525	$ 4,525	$ 4,253	$ 4,253
Term Loan B Facility, net	$ (408,662)	$ (414,352)	$ (425,144)	$ (441,471)
Other long-term borrowings, net	$ (98,823)	$ (100,513)	$ (68,319)	$ (69,161)

Fair Value Measurements On a Nonrecurring Basis

	Fair Value Measurements at December 31, 2018
	Total	Level I	Level II	Level III
Cash and cash equivalents	$ 58,590	$ 58,590	—	—
Restricted cash	$ 2,865	$ 2,865	—	—
Amounts due from related parties, short-term	$ 28,562	—	$ 28,562	—
Loans receivable from affiliates	$ 27,657	—	$ 27,657	—
Amounts due from related parties, long-term	$ 28,880	—	$ 28,880	—
Notes receivable, net of current portion(2)	$ 11,629	—	$ 11,629	—
Note receivable from affiliates	$ 4,525	—	$ 4,525	—
Term Loan B facility, net(1)	$ (414,352)	—	$ (414,352)	—
Other long-term borrowings, net (1)	$ (100,513)	—	$ (100,513)	—

	Fair Value Measurements at December 31, 2017
	Total	Level I	Level II	Level III
Cash and cash equivalents	$ 24,047	$ 24,047	—	—
Restricted cash	$ 5,886	$ 5,886	—	—
Amounts due from related parties, short-term	$ 10,545	—	$ 10,545	—
Loans receivable from affiliates	$ 11,706	—	$ 11,706	—
Amounts due from related parties, long-term	$ 34,891	—	$ 34,891	—
Notes receivable, net of current portion(2)	$ 15,897	—	$ 15,897	—
Note receivable from affiliates	$ 4,253	—	$ 4,253	—
Term Loan B facility, net(1)	$ (441,471)	—	$ (441,471)	—
Other long-term borrowings, net(1)	$ (69,161)	—	$ (69,161)	—

	Fair Value Measurements at December 31, 2018
	Total	Level I	Level II	Level III
Vessels, net (for Navios Felicity)	$ 4,705	—	$ 4,705	—
Vessels, net (for Navios Libra II)	$ 4,559	—	$ 4,559	—

	Fair Value Measurements at December 31, 2017
	Total	Level I	Level II	Level III
Vessels, net (for Navios Gemini S)	$ 4,078	—	$ 4,078	—
Vessels, net (for Navios Hope)	$ 16,127	—	$ 16,127	—
(1) The fair value of the Company’s debt is estimated based on currently available debt with similar contract terms, interest rate and remaining maturities as well as taking into account our creditworthiness. (2) The fair value is estimated based on currently available information on the Company’s counterparty with similar contract terms, interest rate and remaining maturities.

Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

SEGMENT INFORMATION [Abstract]

Segments Summarized Financial Information

	Navios Partners Operations			Navios Containers Operations			Total
		Twelve Month	Twelve Month		Period from	Eliminations for the Period from		Twelve Month	Twelve Month
		Period Ended	Period Ended		April 28, 2017	April 28, 2017 to		Period Ended	Period Ended
		December 31,	December 31,		to August 29,	August 29,		December 31,	December 31,
		2018	2017		2017	2017		2018	2017
Revenue		$ 231,361	$ 199,297		$ 12,355	—		$ 231,361	$ 211,652
Management fees		(68,871)	(62,595)		(4,715)	—		(68,871)	(67,310)
Interest expense and finance cost, net		(42,766)	(37,647)		(767)	189		(42,766)	(38,225)
Depreciation and amortization		(58,334)	(67,885)		(4,875)	—		(58,334)	(72,760)
Net (loss)/ income		(13,081)	(15,089)		593	(355)		(13,081)	(14,851)
Total assets		1,314,133	1,305,302		—	—		1,314,133	1,305,302
Capital expenditures		(118,755)	(217,019)		(59,885)	—		(118,755)	(276,904)
Investment in affiliates		66,296	52,122		—	—		66,296	52,122
Cash and cash equivalents		58,590	24,047		—	—		58,590	24,047
Restricted cash		2,865	5,886		—	—		2,865	5,886
Long-term borrowings (including current and non-current portion), net		507,485	493,463		—	—		507,485	493,463

Revenue By Geographic Region


	Year Ended December 31, 2018	Year Ended December 31, 2017	Year Ended December 31, 2016
Asia	$ 120,660	$ 125,618	$ 112,019
Europe	86,633	47,308	54,006
North America	17,862	20,307	13,364
Australia	6,206	18,419	11,135

Total	$ 231,361	$ 211,652	$ 190,524

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

COMMITMENTS AND CONTINGENCIES [Abstract]

Future Minimum Contractual Obligations

	Amount
2019	$ 547
2020	2,178
2021	2,172
2022	2,149
2023	2,080
2024 and thereafter	11,691

Total	$ 20,817

Leases (Tables)

12 Months Ended

Dec. 31, 2018

LEASES [Abstract]

Leases


	Amount
2019	$95,815
2020	82,025
2021	80,837
2022	70,894
2023 and thereafter	248,448

Total	$578,019

Investment In Affiliates (Tables)

12 Months Ended

Dec. 31, 2018

INVESTMENTS IN AFFILIATES [Abstract]

Financial information of affiliate companies, balance sheet

	Navios Containers
	December 31, 2018	December 31, 2017
Balance Sheet
Cash and cash equivalents, including restricted cash	$ 18,892	$ 14,501
Current assets	6,245	6,870
Non-current assets	388,390	245,440
Current liabilities	19,758	7,060
Long-term debt including current portion, net	133,196	119,033
Non-current liabilities	78,100	—

Financial information of affiliate companies, income statement

	Navios Containers
	Year ended December 31, 2018	Period from April 28, 2017 (date of inception) to December 31, 2017
Income Statement
Revenue	$ 133,921	$ 39,188
Net income	$ 12,700	$ 2,638

Cash Distributions and Earnings per Unit (Tables)

12 Months Ended

Dec. 31, 2018

CASH DISTRIBUTIONS AND EARNINGS PER UNIT [Abstract]

Schedule Of Incentive Distributions Made To General Partners Or Unitholders By Distribution

		Marginal Percentage Interest in Distributions
	Total Quarterly Distribution Target Amount	Common Unitholders	General Partner
Minimum Quarterly Distribution	up to $ 0.35	98%	2%
First Target Distribution	up to $ 0.4025	98%	2%
Second Target Distribution	above $ 0.4025 up to $0.4375	85%	15%
Third Target Distribution	above $ 0.4375 up to $0.525	75%	25%
Thereafter	above $ 0.525	50%	50%

Schedule Of Earnings Per Unit, Basic And Diluted

	Year Ended December 31, 2018	Year Ended December 31, 2017	Year Ended December 31, 2016
Net loss	$ (13,081)	$ (15,090)	$ (52,549)
Loss attributable to:
Common unitholders	$ (12,819)	$ (14,788)	$ (51,498)
Weighted average units outstanding (basic and diluted)
Common unitholders	162,353,865	132,610,330	83,107,066
Loss per unit (basic and diluted):
Common unitholders	$ (0.08)	$ (0.11)	$ (0.62)
Earnings per unit — distributed (basic and diluted):
Common unitholders	$ 0.08	—	—
Loss per unit — undistributed (basic and diluted):
Common unitholders	$ (0.16)	$ (0.11)	$ (0.62)

Description of Business (Details)	1 Months Ended	2 Months Ended	3 Months Ended	5 Months Ended	8 Months Ended	10 Months Ended	11 Months Ended	12 Months Ended
Description of Business (Details)	Feb. 04, 2015 USD ($)	Mar. 13, 2018 USD ($) $ / shares shares	Apr. 09, 2019	Jun. 08, 2017 USD ($) $ / shares shares	Aug. 29, 2017 USD ($) $ / shares shares	Nov. 09, 2017 USD ($) $ / shares shares	Dec. 03, 2018 shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 USD ($)
Entity Information [Line Items]
Formation date								Aug. 07, 2007
General partner, Name								Navios GP L.L.C.
Date of initial public offering								Nov. 16, 2007
General partner units outstanding \| shares								3,450,091	3,016,284
Common units outstanding \| shares								169,054,258	147,797,720
Trading Symbol								NMM
Number of units received \| shares								169,054,258	147,797,720
Distribution of Navios Containers’ shares								$ 4,243,000	$ 0	$ 0
Equity Method Investment, Other than Temporary Impairment								$ 560,000	0	$ 0
Navios Holdings
Entity Information [Line Items]
Ownership percentage of Navios Holdings			20.40%					20.00%
Navios Holdings' general partner interest in Navios Partners			2.10%					2.00%
Common units outstanding \| shares								31,053,233
Navios Containers
Entity Information [Line Items]
Entity Incorporation, Country Name								Republic of the Marshall Islands
Entity Incorporation, Date of Incorporation								Apr. 28, 2017
Navios Holdings
Entity Information [Line Items]
Proceeds from Issuance of Private Placement	$ 14,967,000
Navios Containers
Entity Information [Line Items]
Common units outstanding \| shares								11,592,276
Difference between carrying amount of investment and underlying equity in net assets of equity method investee									$ 174,000
Limited Partners Capital Account Distribution Shares \| shares							855,001
Distribution of Navios Containers’ shares								$ 4,243,000
Equity Method Investment, Other than Temporary Impairment								$ 560,000
Ownership percentage					39.90%			33.50%
Percentage of partners' capital							2.50%
Navios Containers \| Navios Holdings
Entity Information [Line Items]
Common units outstanding \| shares								1,263,276
Sale of Stock, Percentage of Ownership after Transaction								3.70%
Private Placement \| Navios Containers
Entity Information [Line Items]
Number of shares sold in Private Placement \| shares		5,454,546		10,057,645	10,000,000	9,090,909
Proceeds from Issuance of Private Placement		$ 30,000,000		$ 50,288,000	$ 50,000,000	$ 50,000,000
Sale of Stock, Price Per Share \| $ / shares		$ 5.5		$ 5	$ 5	$ 5.5
Private Placement \| Navios Containers
Entity Information [Line Items]
Sale of Stock, Percentage of Ownership after Transaction				59.70%
Payments to acquire investments		$ 14,460,000		$ 30,000,000	$ 10,000,000	$ 10,000,000
Number of units received \| shares		2,629,095		6,000,000	2,000,000	1,818,182
Private Placement \| Navios Containers \| Navios Holdings
Entity Information [Line Items]
Payments to acquire investments		$ 500,000		$ 5,000,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				9.90%
Number of units received \| shares		90,909		1,000,000
Warrants \| Navios Containers
Entity Information [Line Items]
Warrants, Expected term		5 years		5 years	5 years	5 years
Ownership percentage upon the exercise of warrants				6.80%	6.80%	6.80%
Number of warrants received		370,909
Warrants \| Navios Containers \| Navios Holdings
Entity Information [Line Items]
Warrants, Expected term		5 years		5 years
Ownership percentage upon the exercise of warrants				1.70%
Number of warrants received		9,273
NOTC \| Navios Containers
Entity Information [Line Items]
Trading Symbol								NMCI
Navios Containers Vessels \| Navios Containers
Entity Information [Line Items]
Number Of Vessels Acquired				5
Containership Capacity				4,250
Charter Hire Daily Rate				$ 26,850
Number Of Vessels To Be Acquired				9
Number of vessels				14
Purchase price				$ 64,000,000
Navios Containers Vessels \| Private Placement \| Navios Containers
Entity Information [Line Items]
Proceeds from Issuance of Private Placement				$ 40,000,000

Summary of Significant Accounting Policies - Schedule of Entities (Table) (Details)

12 Months Ended

Dec. 31, 2018

Summary of Significant Accounting Policies (Details) - USD ($)	11 Months Ended	12 Months Ended
	Nov. 15, 2012	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Aug. 29, 2017	Dec. 31, 2015	Feb. 18, 2015	Oct. 09, 2013
Property Plant And Equipment [Line Items]
Restricted cash		$ 2,865,000	$ 5,886,000
Allowance for doubtful accounts		$ 1,495,000	1,495,000	$ 0		$ 0
Depreciation method		straight line
Scrap value per light weight ton		$ 340
Vessel impairment losses		44,344,000	32,677,000	27,201,000
Direct Operating Costs		$ 6,180,000	7,172,000	6,381,000
Annual growth factor of management fees		1.00%
Utilization rate of fleet		98.60%
Amortization and write-off of deferred financing cost and discount		$ 7,258,000	9,744,000	4,003,000
Foreign currency exchange gains/(losses)		$ 21,000	(54,000)	11,000
Percentage allocations of the additional available cash		100.00%
Distribution policy members or limited partners description		As per the Partnership Agreement, within 45 days following the end of each quarter, to the extent and as may be declared by the Board, an amount equal to 100% of Available Cash with respect to such quarter shall be distributed to the partners as of the record date selected by the Board of Directors.
Revenue from Vessels		$ 231,361,000	211,652,000	190,524,000
Equity compensation expense		2,450,000	1,904,000	93,000
Cash distribution paid		10,261,000
Other Income		1,554,000	9,884,000	14,523,000
Amounts due from related parties, long-term - Fair Value		28,880,000	34,891,000
Cash collateral to the Term Loan B		$ 2,000,000
ASU 2016-18 \| Effect of retrospective application
Property Plant And Equipment [Line Items]
Increase/ (decrease) in net cash provided by operating activities			(435,000)	5,286,000
Increase/ (decrease) in net cash provided financing activities			(1,407,000)	(5,347,000)
Increase/ (decrease) in cash and cash equivalents			(1,842,000)	(61,000)
Minimum
Property Plant And Equipment [Line Items]
Interval between vessel drydockings / special surveys		30 months
Maximum
Property Plant And Equipment [Line Items]
Interval between vessel drydockings / special surveys		60 months
Navios Holdings
Property Plant And Equipment [Line Items]
Income from credit default insurance			7,242,000	9,153,000
Other Income			7,623,000	9,635,000
Accrued interest and discount unwinding		$ 389,000
Amounts due from related parties, long-term - Fair Value		17,612,000
Write down on receivables		$ 2,000,000
Navios Containers
Property Plant And Equipment [Line Items]
Ownership percentage		33.50%			39.90%
Total Navios Partners' Capital
Property Plant And Equipment [Line Items]
Cash distribution paid		$ 10,261,000	0	0
Navios Holdings
Property Plant And Equipment [Line Items]
Supplemental credit default insurance maximum cash payment	$ 20,000,000
Navios Holdings \| Navios Containers
Property Plant And Equipment [Line Items]
Sale of Stock, Percentage of Ownership after Transaction		3.70%
Navios Europe I
Property Plant And Equipment [Line Items]
Ownership percentage		5.00%						5.00%
Navios Europe I \| Navios Holdings
Property Plant And Equipment [Line Items]
Ownership percentage								47.50%
Navios Europe II
Property Plant And Equipment [Line Items]
Ownership percentage		5.00%					5.00%
Navios Europe II \| Navios Holdings
Property Plant And Equipment [Line Items]
Ownership percentage							47.50%
Voyage contracts
Property Plant And Equipment [Line Items]
Revenue from Vessels		$ 9,660,000	0	2,798,000
Time charter
Property Plant And Equipment [Line Items]
Revenue from Vessels		215,877,000	203,775,000	192,900,000
Pooling and profit sharing arrangements
Property Plant And Equipment [Line Items]
Revenue from Vessels		$ 5,824,000	7,877,000	(5,174,000)
Drybulk vessels
Property Plant And Equipment [Line Items]
Vessel useful life		25 years
Container vessels
Property Plant And Equipment [Line Items]
Vessel useful life		30 years
Ultra-Handymax Vessels \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee		$ 4,230	4,100
Panamax Vessels \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee		4,330	4,200
Capesize Vessels \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee		5,250	5,250
Container Vessels of TEU 6,800 \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee		6,700	6,700
Container Vessels of more than TEU 8,000 \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee		7,400	7,400
Container Vessels of more than TEU 13,000 \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee		8,750	8,750
Navios Gemini S
Property Plant And Equipment [Line Items]
Vessel impairment losses			2,373,000
YM Unity,YM Utmost,Navios Felicity and Navios Libra II
Property Plant And Equipment [Line Items]
Vessel impairment losses		44,344,000
MSC Cristina and the Navios Apollon
Property Plant And Equipment [Line Items]
Vessel impairment losses				27,201,000
One Vessel
Property Plant And Equipment [Line Items]
Vessel held and used, impairment losses			30,304,000
Letter Of Credit
Property Plant And Equipment [Line Items]
Restricted cash			5,500,000
Retention Accounts
Property Plant And Equipment [Line Items]
Restricted cash		865,000	386,000
Maintenance and Replacement
Property Plant And Equipment [Line Items]
Capital expenditures		26,787,000	14,859,000	11,899,000
Restricted Common Units
Property Plant And Equipment [Line Items]
Equity compensation expense		$ 2,450,000	$ 1,904,000	$ 93,000
Restricted common units vested in period		1,720,426

Acquisition/ Deconsolidation (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	2 Months Ended	5 Months Ended	6 Months Ended	8 Months Ended	10 Months Ended	12 Months Ended
	Feb. 04, 2015	Mar. 13, 2018	Jun. 08, 2017	Jun. 30, 2017	Aug. 29, 2017	Nov. 09, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Equity Method Investments [Line Items]
Amounts due from related parties							$ 28,562	$ 10,545
Navios Containers repayment of seller’s credit							0	14,000	$ 0
Gain on change in control							$ 0	$ 4,068	$ 0
Number of units received							169,054,258	147,797,720
Common units outstanding							169,054,258	147,797,720
Navios Holdings
Schedule Of Equity Method Investments [Line Items]
Proceeds from Issuance of Private Placement	$ 14,967
Amounts due from related parties							$ 28,562
Navios Containers
Schedule Of Equity Method Investments [Line Items]
Investment in Navios Containers, equity method					$ 40,000
Gain on change in control					4,068
Investment in Navios Containers					43,494
Investment in Navios Containers, equity method					$ 30,000
Ownership percentage					39.90%		33.50%
Common units outstanding							11,592,276
Navios Containers \| Private Placement
Schedule Of Equity Method Investments [Line Items]
Payments to acquire investments		$ 14,460	$ 30,000		$ 10,000	$ 10,000
Sale of Stock, Percentage of Ownership after Transaction			59.70%
Number of units received		2,629,095	6,000,000		2,000,000	1,818,182
Navios Containers \| Warrants
Schedule Of Equity Method Investments [Line Items]
Ownership percentage upon the exercise of warrants			6.80%		6.80%	6.80%
Warrants, Expected term		5 years	5 years		5 years	5 years
Navios Containers \| Private Placement
Schedule Of Equity Method Investments [Line Items]
Number of shares sold in Private Placement		5,454,546	10,057,645		10,000,000	9,090,909
Proceeds from Issuance of Private Placement		$ 30,000	$ 50,288		$ 50,000	$ 50,000
Sale of Stock, Price Per Share		$ 5.5	$ 5		$ 5	$ 5.5
Navios Holdings \| Navios Containers
Schedule Of Equity Method Investments [Line Items]
Sale of Stock, Percentage of Ownership after Transaction							3.70%
Common units outstanding							1,263,276
Navios Containers Vessels \| Navios Containers
Schedule Of Equity Method Investments [Line Items]
Number Of Vessels Acquired			5
Containership Capacity			4,250
Purchase price			$ 64,000
Navios Containers Vessels \| Navios Containers \| Private Placement
Schedule Of Equity Method Investments [Line Items]
Proceeds from Issuance of Private Placement			40,000
Navios Containers Vessels \| Navios Containers \| Financed through sellers credit
Schedule Of Equity Method Investments [Line Items]
Amounts due from related parties			$ 24,000
Interest rate description							LIBOR plus 375 bps
Interest rate percentage							37.50%
Navios Containers repayment of seller’s credit				$ 10,000	$ 14,000

Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 2,865	$ 5,886
Cash Collateral for Borrowed Securities	2,000
Retention Accounts
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 865	386
Letter of guarantee
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash		$ 5,500

Accounts Receivable, Net (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts And Notes Receivable Net [Abstract]
Accounts receivable	$ 15,931	$ 15,616
Less: Provision for doubtful accounts	(1,495)	(1,495)	$ 0	$ 0
Accounts receivable, net	$ 14,436	$ 14,121

Accounts Receivable, Net (Details)	12 Months Ended
Accounts Receivable, Net (Details)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Concentration of credit risk with respect to accounts receivable	Concentration of credit risk with respect to accounts receivable is limited due to the Company’s large number of customers, who are internationally dispersed and have a variety of end markets in which they sell. Due to these factors, management believes that no additional credit risk beyond amounts provided for collection losses is inherent in the Company’s trade receivables.
Customer 1
Loss Contingencies [Line Items]
Concentration Risk, Percentage	24.50%	26.80%	29.60%
Customer 2
Loss Contingencies [Line Items]
Concentration Risk, Percentage		12.00%	13.00%
Customer 3
Loss Contingencies [Line Items]
Concentration Risk, Percentage			11.60%

Vessels, Net - Acquisition of Vessels (Details) $ in Thousands	4 Months Ended	5 Months Ended				6 Months Ended	7 Months Ended		8 Months Ended		9 Months Ended	12 Months Ended
	May 09, 2018 USD ($)	Jun. 07, 2018 USD ($)	May 21, 2018 USD ($)	Jun. 09, 2017 USD ($)	Jun. 07, 2017 USD ($)	Jul. 10, 2017 USD ($)	Aug. 11, 2017 USD ($)	Jul. 17, 2017 USD ($)	Aug. 31, 2018 USD ($)	Aug. 21, 2017 USD ($)	Sep. 20, 2017 USD ($)	Dec. 31, 2018 USD ($)
Navios Symphony
Property Plant And Equipment [Line Items]
Vessel year built												2010
Vessel type												Capesize
Vessel capacity in DWT												178,132
Purchase price											$ 27,961
Navios Aster
Property Plant And Equipment [Line Items]
Vessel year built												2010
Vessel type												Capesize
Vessel capacity in DWT												179,314
Purchase price										$ 28,855
Navios Christine B
Property Plant And Equipment [Line Items]
Vessel year built												2009
Vessel type												Ultra-Handymax
Vessel capacity in DWT												58,058
Purchase price							$ 14,030
Navios Sol
Property Plant And Equipment [Line Items]
Vessel year built												2009
Vessel type												Capesize
Vessel capacity in DWT												180,274
Purchase price								$ 28,607
Navios Libertas
Property Plant And Equipment [Line Items]
Vessel year built												2007
Vessel type												Panamax
Vessel capacity in DWT												75,511
Purchase price						$ 13,737
Navios Ace
Property Plant And Equipment [Line Items]
Vessel year built												2011
Vessel type												Capesize
Vessel capacity in DWT												179,016
Purchase price				$ 31,364
Navios Prosperity I
Property Plant And Equipment [Line Items]
Vessel year built												2007
Vessel type												Panamax
Vessel capacity in DWT												75,527
Purchase price					$ 13,687
Navios Sphera and Navios Mars
Property Plant And Equipment [Line Items]
Purchase price									$ 79,000
Navios Sphera
Property Plant And Equipment [Line Items]
Vessel year built												2016
Vessel type												Panamax
Vessel capacity in DWT												84,872
Navios Mars
Property Plant And Equipment [Line Items]
Vessel year built												2016
Vessel type												Capesize
Vessel capacity in DWT												181,259
Navios Altair I
Property Plant And Equipment [Line Items]
Vessel year built												2006
Vessel type												Panamax
Vessel capacity in DWT												74,475
Purchase price		$ 11,842
Navios Symmetry
Property Plant And Equipment [Line Items]
Vessel year built												2006
Vessel type												Panamax
Vessel capacity in DWT												74,381
Purchase price			$ 11,811
Navios Apollon I
Property Plant And Equipment [Line Items]
Vessel year built												2005
Vessel type												Panamax
Vessel capacity in DWT												87,052
Purchase price	$ 13,446

Vessels, Net - Sales of Vessels (Details) - USD ($) $ in Thousands		4 Months Ended	6 Months Ended	11 Months Ended		12 Months Ended
	Jan. 12, 2017	Apr. 21, 2017	Jul. 02, 2018	Dec. 14, 2018	Dec. 04, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 21, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Vessels, net						$ 1,043,250	$ 1,099,015
Net cash proceeds from sale of vessels						76,264	113,818		$ 0
Gain / (Loss) on sale of vessel						$ (53)	(1,260)		$ 0
Navios Gemini S
Property Plant And Equipment [Line Items]
Dry dock and special survey costs, net								$ 502
Vessels, net								6,451
Net cash proceeds from sale of vessels								$ 4,078
Navios Apollon
Property Plant And Equipment [Line Items]
Dry dock and special survey costs, net		$ 782
Vessels, net		14,758
Net cash proceeds from sale of vessels		$ 4,750
MSC Cristina
Property Plant And Equipment [Line Items]
Vessels, net	$ 142,193
Net cash proceeds from sale of vessels	$ 125,000
Gain / (Loss) on sale of vessel							$ (1,260)
Navios Libra II
Property Plant And Equipment [Line Items]
Dry dock and special survey costs, net				$ 657
Vessels, net				5,784
Net cash proceeds from sale of vessels				$ 4,559
Navios Felicity
Property Plant And Equipment [Line Items]
Dry dock and special survey costs, net					$ 818
Vessels, net					10,016
Net cash proceeds from sale of vessels					4,705
Gain / (Loss) on sale of vessel					$ (53)
YM Unity and YM Utmost
Property Plant And Equipment [Line Items]
Dry dock and special survey costs, net			$ 2,104
Vessels, net			104,860
Net cash proceeds from sale of vessels			$ 67,000

Vessels, Net - Vessel Impairment Losses (Details) - USD ($) $ in Thousands		4 Months Ended	6 Months Ended	9 Months Ended	10 Months Ended		11 Months Ended		12 Months Ended
	Jan. 09, 2017	Apr. 27, 2018	Jul. 02, 2018	Oct. 02, 2018	Oct. 25, 2018	Nov. 10, 2016	Dec. 04, 2018	Nov. 27, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Vessel impairment losses									$ 44,344	$ 32,677	$ 27,201
Gain / (Loss) on sale of vessel									(53)	(1,260)	0
Refinance of July 2012 Credit Facility
Property Plant And Equipment [Line Items]
Repayment of debt			$ 20,200
July 2012 Credit Facility
Property Plant And Equipment [Line Items]
Repayment of debt						$ 28,052
Navios Gemini S
Property Plant And Equipment [Line Items]
Vessel impairment losses										2,373
Sale price agreed in Memorandum of Agreement								$ 4,078
Navios Apollon
Property Plant And Equipment [Line Items]
Vessel impairment losses											10,008
Sale price agreed in Memorandum of Agreement	$ 4,750
MSC Cristina
Property Plant And Equipment [Line Items]
Vessel held for sale											125,000
Gain / (Loss) on sale of vessel										$ (1,260)
Impairment of Long-Lived Assets to be Disposed of											$ 17,193
Navios Libra II
Property Plant And Equipment [Line Items]
Vessel impairment losses									1,226
Sale price agreed in Memorandum of Agreement					$ 4,559
Navios Felicity
Property Plant And Equipment [Line Items]
Vessel impairment losses									5,258
Sale price agreed in Memorandum of Agreement				$ 4,705
Gain / (Loss) on sale of vessel							$ (53)
YM Unity and YM Utmost
Property Plant And Equipment [Line Items]
Vessel held for sale									67,000
Sale price agreed in Memorandum of Agreement		$ 67,000
Impairment of Long-Lived Assets to be Disposed of									$ 37,860

Intangible Assets - Aggregate Amortizations (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INTANGIBLE ASSETS [Abstract]
2019	$ 1,166
2020	1,166
2021	1,166
2022 and thereafter	834
Total	$ 4,332	$ 8,080	$ 18,952

Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Acceleration of amortization of intangible asset	$ 0	$ 0	$ 20,526
Finite lived intangible assets amortization method	straight line
Weighted average useful life for favorable lease terms chartered out	10 years 3 months 16 days
Acquired Finite-lived Intangible Asset, Residual Value	$ 0
Navios Luz Navios and Buena Ventura \| Favorable lease intangibles
Acceleration of amortization of intangible asset			$ 20,526

Accrued Expenses (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued Liabilities Current [Abstract]
Accrued voyage expenses	$ 2,828	$ 1,805
Accrued loan interest	2,244	1,981
Accrued legal and professional fees	252	889
Accrued bonus	110	4,125
Total accrued expenses	$ 5,434	$ 8,800

Accrued Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accrued legal and professional fees	$ 252	$ 889
General and Administrative Expense
Professional fees paid	3,985	3,475
Cash compensation subject to fulfillment	2,160	3,650
Bonus fees paid	8,000	$ 800
General and Administrative Expense \| Directors and officers
Cash compensation subject to fulfillment	$ 2,160

Borrowings (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 494,209	$ 510,632
Financial liability	24,842	0
Total borrowings	519,051	510,632
Less: Long-term unamortized discount	(6,629)	(10,824)
Less: Current portion of long-term borrowings, net	(26,804)	(26,586)
Less: Deferred finance costs, net	(4,937)	(6,345)
Long-term borrowings, net	480,681	466,877
Term Loan B facility
Debt Instrument [Line Items]
Total debt	418,538	441,471
Credit facilities
Debt Instrument [Line Items]
Total debt	$ 75,671	$ 69,161

Borrowings - Principal Payments Due (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Maturities of Long-term Debt and Capital Lease Obligations [Abstract]
2019	$ 33,392
2020	414,297
2021	16,230
2022	6,833
2023 and thereafter	48,299
Total	$ 519,051	$ 510,632

Borrowings (Details) $ in Thousands	5 Months Ended			6 Months Ended				7 Months Ended	8 Months Ended	10 Months Ended		11 Months Ended	12 Months Ended
Borrowings (Details) $ in Thousands	Jun. 01, 2018 USD ($)	May 18, 2018 USD ($)	May 31, 2016 USD ($)	Jul. 02, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 28, 2017 USD ($)	Jul. 18, 2017 USD ($)	Aug. 30, 2018 USD ($)	Nov. 03, 2017 USD ($)	Nov. 10, 2016 USD ($)	Dec. 13, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Aug. 10, 2017 USD ($)	Sep. 30, 2015 USD ($)	Nov. 01, 2013 USD ($)	Jun. 30, 2013 USD ($)
Debt Instrument [Line Items]
Unamortized discount													$ 6,629	$ 10,824
Long- term debt													507,485	$ 493,463
Cash collateral to the Term Loan B													$ 2,000
Term Loan B facility
Debt Instrument [Line Items]
Issuance date													Jun. 30, 2013
Debt amount																		$ 250,000
Description of assets pledged as collateral													Four drybulk vessels were released and in exchange, five drybulk vessels and $2,000 in cash substituted the released vessels, as collateral to the Term Loan B Facility.
Cash collateral to the Term Loan B													$ 2,000
Term Loan B Credit Facility Addition
Debt Instrument [Line Items]
Debt amount															$ 53,000		$ 189,500
Number of vessels acquired																	3
Description of terms of credit facility													The add-on to the Term Loan B Facility bore the same terms as the Term Loan B Facility. Navios Partners used the net proceeds to partially finance the acquisition of three vessels.
Term Loan B Credit Facility including addition
Debt Instrument [Line Items]
Write-off of deferred financing fees			$ 187
Repayment of debt			$ 25,000
New Term Loan B Credit Facility
Debt Instrument [Line Items]
Issuance date													Mar. 14, 2017
Debt amount													$ 405,000
Interest rate description													LIBOR plus 500 bps
Interest rate percentage													5.00%
Amount outstanding													$ 411,909
Unamortized discount													$ 6,629
Repayment frequency													quarterly
Repayment installments													6
Repayment amount													$ 5,733
Balloon payment on the last repayment date													384,138
Write-off of deferred financing fees													$ 1,880
Repayment interest rate percentage													1.25%
Maturity Date													Sep. 14, 2020
Write-off of deferred debt unamortized discount													$ 1,275
June 2016 Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Jun. 23, 2016
Credit facility, maximum borrowing capacity													$ 30,000
Outstanding balance													$ 0
Interest rate percentage													4.00%
Interest rate description													LIBOR plus 400 bps
Final maturity date													Jan. 30, 2017
June 2017 Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Jun. 26, 2017
Credit facility, maximum borrowing capacity													$ 32,000
Number of loan tranches													2
Interest rate percentage													3.00%
Balloon payment on the last repayment date													$ 8,328
Interest rate description													LIBOR plus 300 bps
Maturity Date													Sep. 30, 2021
June 2017 Credit Facility \| Tranche A
Debt Instrument [Line Items]
Amount drawn down							$ 17,000
Write-off of deferred financing fees													$ 117
Repayment of debt												$ 15,070
June 2017 Credit Facility \| Tranche B
Debt Instrument [Line Items]
Outstanding balance													$ 12,915
Repayment frequency													quarterly
Repayment installments													11
Repayment amount													$ 417
Amount drawn down								$ 15,000
July 2012 Credit Facility
Debt Instrument [Line Items]
Repayment of debt											$ 28,052
Line Of Credit OF Facility Increase Decrease For Period Net											30,192
Gain on debt repayment											$ 2,140
Refinance of July 2012 Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Jun. 28, 2017
Credit facility, maximum borrowing capacity													$ 39,000
Number of loan tranches													4
Interest rate percentage													3.10%
Outstanding balance													$ 13,000
Balloon payment on the last repayment date													$ 8,250
Interest rate description													LIBOR plus 310 bps
Amount drawn down						$ 7,000				$ 32,000
Write-off of deferred financing fees					$ 209
Repayment of debt				$ 20,200
Maturity Date													Dec. 31, 2020
Refinance of July 2012 Credit Facility \| 1st Installment
Debt Instrument [Line Items]
Repayment frequency													quarterly
Repayment amount													$ 750
Refinance of July 2012 Credit Facility \| Next 7 Installments
Debt Instrument [Line Items]
Repayment frequency													quarterly
Repayment installments													7
Repayment amount													$ 571
April 2015 Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Apr. 16, 2015
Credit facility, maximum borrowing capacity													$ 164,000
Number of loan tranches													2
Outstanding balance													$ 0
Cancellation of undrawn amount																$ 83,000
Write-off of deferred financing fees													$ 516
Final maturity date													Apr. 20, 2022
April 2015 Credit Facility \| One more super-post-panamax
Debt Instrument [Line Items]
Capacity per each container in TEU													13,100
March 2018 Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Mar. 26, 2018
Credit facility, maximum borrowing capacity													$ 14,300
Number of loan tranches													2
Interest rate percentage													3.00%
Outstanding balance													$ 6,554
Repayment frequency													quarterly
Repayment installments													18
Repayment amount													$ 298
Balloon payment on the last repayment date													$ 1,190
Interest rate description													LIBOR plus 300 bps
Maturity Date													Jun. 30, 2023
March 2018 Credit Facility \| Tranche A
Debt Instrument [Line Items]
Amount drawn down		$ 7,150
March 2018 Credit Facility \| Tranche B
Debt Instrument [Line Items]
Amount drawn down	$ 7,150
Write-off of deferred financing fees													$ 95
Repayment of debt												$ 6,554
DVB 44M Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Jul. 31, 2018
Credit facility, maximum borrowing capacity													$ 44,000
Number of loan tranches													2
Interest rate percentage													2.90%
Outstanding balance													$ 43,202
Repayment frequency													quarterly
Repayment installments													19
Repayment amount													$ 798
Balloon payment on the last repayment date													$ 28,050
Interest rate description													LIBOR plus 290 bps
Maturity Date													Sep. 30, 2023
DVB 44M Credit Facility \| Tranche A
Debt Instrument [Line Items]
Amount drawn down									$ 17,500
DVB 44M Credit Facility \| Tranche B
Debt Instrument [Line Items]
Amount drawn down									$ 26,500
December 2018 Credit Facility
Debt Instrument [Line Items]
Credit Facility, Initiation Date													Dec. 26, 2018
Credit facility, maximum borrowing capacity													$ 28,500
Number of loan tranches													3
Interest rate percentage													2.75%
Debt instrument term													5 years
Interest rate description													LIBOR plus 275 bps

Borrowings - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 09, 2019	Dec. 31, 2018	Dec. 10, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Restrictive covenants		As of December 31, 2018, Navios Partners was in compliance with the financial covenants and/or the prepayment and/or the cure provisions as applicable in each of its credit facilities.
Financial liability		$ 24,842		$ 0
Financial Liabilities
Debt Instrument [Line Items]
Financial liability		24,842	$ 25,000
Purchase Obligation		$ 6,300
Sale Leaseback Transaction, Imputed Interest Rate		7.60%
Financial Liabilities \| Navios Fantastiks
Debt Instrument [Line Items]
Sale Lease back Transaction Daily Rental Payments		$ 5,300
Financial Liabilities \| Navios Beaufiks
Debt Instrument [Line Items]
Sale Lease back Transaction Daily Rental Payments		$ 5,100
Navios Holdings
Debt Instrument [Line Items]
Ownership percentage of Navios Holdings	20.40%	20.00%
July 2012 Credit Facility and June 2017 Credit Facility
Debt Instrument [Line Items]
Restrictive covenants		The credit facilities contain a number of restrictive covenants that prohibit or limit Navios Partners from, among other things: incurring or guaranteeing indebtedness; entering into affiliate transactions; charging, pledging or encumbering the vessels; changing the flag, class, management or ownership of Navios Partners’ vessels; changing the commercial and technical management of Navios Partners’ vessels; selling or changing the beneficial ownership or control of Navios Partners’ vessels; not maintaining Navios Holdings’ (or its affiliates) ownership in Navios Partners of at least 15.0%; and subordinating the obligations under the credit facilities to any general and administrative costs relating to the vessels, including the fixed daily fee payable under the management agreement.
Description of violation or event of default		The credit facilities require compliance with a number of financial covenants, including: (i) maintain a required security amount ranging over 120% to 140%; (ii) minimum free consolidated liquidity in an amount equal to at least $650 per owned vessel; (iii) maintain a ratio of EBITDA to interest expense of at least 2.00:1.00; (iv) maintain a ratio of total liabilities or total debt to total assets (as defined in our credit facilities) ranging of less than 0.75; and (v) maintain a minimum net worth to $135,000.
Minimum net worth required for compliance		$ 135,000
July 2012 Credit Facility and June 2017 Credit Facility \| Minimum
Debt Instrument [Line Items]
Ratio of EBITDA to interest expense		200.00%
Security cover ratio		120.00%
July 2012 Credit Facility and June 2017 Credit Facility \| Minimum \| Navios Holdings
Debt Instrument [Line Items]
Ownership percentage of Navios Holdings		15.00%
July 2012 Credit Facility and June 2017 Credit Facility \| Maximum
Debt Instrument [Line Items]
Total Liabilities to Total Assets ratio		0.75
Security cover ratio		140.00%
Term Loan B Credit Facility including addition
Debt Instrument [Line Items]
Restrictive covenants		The credit facilities contain a number of restrictive covenants that prohibit or limit Navios Partners from, among other things: incurring or guaranteeing indebtedness; entering into affiliate transactions; charging, pledging or encumbering the vessels; changing the flag, class, management or ownership of Navios Partners’ vessels; changing the commercial and technical management of Navios Partners’ vessels; selling or changing the beneficial ownership or control of Navios Partners’ vessels; not maintaining Navios Holdings’ (or its affiliates) ownership in Navios Partners of at least 15.0%; and subordinating the obligations under the credit facilities to any general and administrative costs relating to the vessels, including the fixed daily fee payable under the management agreement.
Description of violation or event of default		The Term Loan B Facility also provides for customary events of default, prepayment and cure provisions.
New Term Loan B Credit Facility \| Minimum
Debt Instrument [Line Items]
Loan to value ratio		80.00%
New Term Loan B Credit Facility \| Maximum
Debt Instrument [Line Items]
Loan to value ratio		100.00%
Prior to any distributions \| July 2012 Credit Facility and June 2017 Credit Facility
Debt Instrument [Line Items]
Minimum free consolidated liquidity		$ 650
68 Equal consecutive average monthly installments \| Financial Liabilities
Debt Instrument [Line Items]
Sale Lease back Transaction Monthly Rental Payments		$ 161
Finance Lease Liability, Maturity Date		Sep. 30, 2024
59 Equal consecutive average monthly installments \| Financial Liabilities
Debt Instrument [Line Items]
Sale Lease back Transaction Monthly Rental Payments		$ 155
Finance Lease Liability, Maturity Date		Dec. 31, 2023

Fair Value of Financial Instruments (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
FAIR VALUE OF FINANCIAL INSTRUMENTS [ABSTRACT]
Cash and cash equivalents - Book Value	$ 58,590	$ 24,047
Cash and cash equivalents - Fair Value	58,590	24,047
Restricted cash - Book Value	2,865	5,886
Restricted cash - Fair Value	2,865	5,886
Amounts due from related parties, short-term - Book Value	28,562	10,545
Amounts due from related parties, short-term - Fair Value	28,562	10,545
Loans receivable from affiliates - Book Value	27,657	11,706
Loans receivable from affiliates - Fair Value	27,657	11,706
Amounts due from related parties, long-term - Book Value	28,880	34,891
Amounts due from related parties, long-term - Fair Value	28,880	34,891
Notes receivable, net of current portion - Book Value	11,629	15,897
Notes receivable, net of current portion - Fair Value	11,629	15,897
Note receivable from affiliates - Book Value	4,525	4,253
Note receivable from affiliates - Fair Value	4,525	4,253
Term Loan B facility, net - Book Value	(408,662)	(425,144)
Term Loan B facility, net - Fair Value	(414,352)	(441,471)
Other long-term borrowings, net - Book Value	(98,823)	(68,319)
Other long-term borrowings, net - Fair Value	$ (100,513)	$ (69,161)

Issuance of Units - Navios Partners (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		2 Months Ended	3 Months Ended			8 Months Ended	11 Months Ended	12 Months Ended
	Jan. 11, 2018	Jan. 31, 2017	Feb. 04, 2015	Feb. 21, 2018	Apr. 09, 2019	Mar. 20, 2017	Mar. 17, 2017	Sep. 01, 2017	Nov. 18, 2016	Dec. 31, 2018	Dec. 24, 2018	Dec. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Proceeds from issuance of Common Limited partners units										$ 33,373		$ 98,774	$ 440
Payments to acquire notes receivable from affiliates										0		4,050	0
Net proceeds from issuance of general partner units										805		2,638	10
Equity compensation expense										2,450		1,904	93
Issuance of common units for transfer of Navios Europe I loans										0		28,697	$ 0
Compensation cost of non-vested restricted common units not yet recognized										$ 3,074
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), value												$ 612
Navios Holdings
Class Of Stock [Line Items]
Ownership percentage of Navios Holdings					20.40%					20.00%
Navios Holdings' general partner interest in Navios Partners					2.10%					2.00%
Common Unitholders
Class Of Stock [Line Items]
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), units												361,444
Partners Capital account units sold in public offering				18,422,000		47,795,000
Unit price				$ 1.9		$ 2.1
Proceeds from issuance of Common Limited partners units				$ 35,002		$ 100,369
Proceeds from issuance of common units, net of offering costs				33,373		95,986
Offering costs				$ 1,629		$ 4,383
Issuance of common units for transfer of Navios Europe I Loans, units												13,076,923
Issuance of restricted units, Unit-based Compensation										2,834,538		2,040,000
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), value												$ 600
Common Unitholders \| Acquisition Agreement
Class Of Stock [Line Items]
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), units								361,444
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), value								$ 600
Common Unitholders \| Continuous Offering Program Sales Agreement
Class Of Stock [Line Items]
Maximum aggregate offering price									$ 25,000
Partners Capital account units sold in public offering												1,200,442	244,201
Proceeds from issuance of Common Limited partners units												$ 2,221	$ 440
General Partner
Class Of Stock [Line Items]
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), units												7,376
Partners Capital account units sold in public offering				375,959		975,408
Net proceeds from issuance of general partner units				$ 714		$ 2,049	$ 468
Partners Capital account units sold in private placement							266,876
Issuance of restricted units, Unit-based Compensation										57,848
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), value												$ 12
General Partner \| Acquisition Agreement
Class Of Stock [Line Items]
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), units								7,376
Issuance of restricted common units for acquisition of vessels from Rickmers Trust (see Note 13), value								$ 12
General Partner \| Continuous Offering Program Sales Agreement
Class Of Stock [Line Items]
Net proceeds from issuance of general partner units												$ 46	$ 10
Partners Capital account units sold in private placement												24,498
Restricted Common Units \| Authorized January 2017
Class Of Stock [Line Items]
Restricted common units vested in period										1,366,665
Restricted Common Units \| Authorized December 2017
Class Of Stock [Line Items]
Restricted common units vested in period										353,761
Restricted Common Units \| Acquisition Agreement
Class Of Stock [Line Items]
Restricted common units vested in period										180,722
Navios Holdings
Class Of Stock [Line Items]
Payments to acquire notes receivable from affiliates							$ 4,050
Value of consideration given							$ 33,473
Navios Holdings \| Common Unitholders
Class Of Stock [Line Items]
Partners Capital account units sold in private placement			1,120,547
Issuance of common units for transfer of Navios Europe I Loans, units							13,076,923
Issuance of common units for transfer of Navios Europe I loans							$ 28,862
Navios Holdings \| General Partner
Class Of Stock [Line Items]
Partners Capital account units sold in private placement			22,868
Directors and officers \| Common Unitholders \| Authorized December 2017
Class Of Stock [Line Items]
Equity compensation expense										$ 1,600		$ 72
Directors and officers \| General Partner \| Authorized January 2017
Class Of Stock [Line Items]
Net proceeds from issuance of general partner units		$ 63
Partners Capital account units sold in private placement		41,633
Directors and officers \| General Partner \| Authorized December 2017
Class Of Stock [Line Items]
Net proceeds from issuance of general partner units	$ 64
Partners Capital account units sold in private placement	27,960
Directors and officers \| General Partner \| Authorized December 2018
Class Of Stock [Line Items]
Net proceeds from issuance of general partner units											$ 27
Partners Capital account units sold in private placement											29,888
Directors and officers \| Restricted Common Units \| Authorized January 2017
Class Of Stock [Line Items]
Equity compensation expense										830		$ 1,832
Issuance of restricted units, Unit-based Compensation		2,040,000
Vesting period		3 years
Directors and officers \| Restricted Common Units \| Authorized December 2017
Class Of Stock [Line Items]
Issuance of restricted units, Unit-based Compensation	1,370,044
Vesting period	4 years
Directors and officers \| Restricted Common Units \| Authorized December 2018
Class Of Stock [Line Items]
Equity compensation expense										$ 20
Issuance of restricted units, Unit-based Compensation											1,464,494
Vesting period											4 years
Restricted common units vested in period										0
Navios Term Loans I \| Navios Revolving Loans I \| Navios Holdings
Class Of Stock [Line Items]
Preferred distribution percentage							12.70%
Navios Term Loans I \| Navios Holdings \| Navios Revolving Loans I
Class Of Stock [Line Items]
Payments to acquire notes receivable from affiliates							$ 4,050
Value of consideration given							$ 33,473
Navios Term Loans I \| Navios Holdings \| Common Unitholders \| Navios Revolving Loans I
Class Of Stock [Line Items]
Issuance of common units for transfer of Navios Europe I Loans, units							13,076,923

Commitments and Contingencies (Table) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Contractual Obligation Fiscal Year Maturity [Abstract]
2019	$ 547
2020	2,178
2021	2,172
2022	2,149
2023	2,080
2024 and thereafter	11,691
Total	$ 20,817

Commitments and Contingencies (Details) - USD ($)	12 Months Ended
Commitments and Contingencies (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Other long-term assets	$ 5,632,000	$ 2,779,000
Deposits for vessels acquisitions	2,853,000	2,770,000	$ 0
Panamax vessel
Property Plant And Equipment [Line Items]
Other long-term assets	$ 2,770	2,770
Deposits for vessels acquisitions		$ 5,540
Vessel capacity in DWT		81,000

Transactions with Related Parties and Affiliates - Revolving Loans to Navios Europe and Others (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 17, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015	Feb. 18, 2015	Dec. 18, 2013	Oct. 09, 2013
Long- term debt			$ 507,485	$ 493,463
Investment in affiliates			66,296	52,122
Loans receivable from affiliates			$ 27,657	11,706
Navios Europe I
Ownership percentage			5.00%					5.00%
Long- term debt			$ 10,000
Navios Europe II
Ownership percentage			5.00%			5.00%
Navios Revolving Loans I \| Navios Europe I
Loans receivable from affiliates			$ 11,205	1,205
Accrued interest income			731	489
Navios Revolving Loans I \| Navios Europe I \| Minimum
Available amount of loan facility			0
Navios Revolving Loans I \| Navios Europe I \| Maximum
Available amount of loan facility			12,000
Navios Revolving Loans II \| Navios Europe II
Loans receivable from affiliates			15,397	9,772
Accrued interest income			4,459	1,801
Navios Term Loans I \| Navios Europe I
Investment in affiliates			500
Accrued interest income			447	334
Navios Term Loans I \| Navios Revolving Loans I \| Navios Holdings
Preferred distribution percentage		12.70%
Navios Term Loans II \| Navios Europe II
Investment in affiliates			700
Accrued interest income			$ 608	395
Navios Holdings \| Navios Europe I
Ownership percentage								47.50%
Navios Holdings \| Navios Europe II
Ownership percentage						47.50%
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans I \| Navios Europe I
Revolving loan facility maximum borrowing capacity							$ 24,100
Preferred distribution percentage			12.70%
Available amount of loan facility			$ 12,000
Increase in available amount of loan facility			$ 30,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans II \| Navios Europe II
Revolving loan facility maximum borrowing capacity						$ 43,500
Preferred distribution percentage			18.00%
Available amount of loan facility			$ 4,503
Increase in available amount of loan facility	$ 14,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans II \| Navios Europe II \| Minimum
Available amount of loan facility			0
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans II \| Navios Europe II \| Maximum
Available amount of loan facility			4,503
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans I \| Navios Europe I
Long- term debt			10,000				$ 10,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans II \| Navios Europe II
Long- term debt					$ 14,000
Navios Acquisitions \| Navios Europe I
Ownership percentage								47.50%
Navios Acquisitions \| Navios Europe II
Ownership percentage						47.50%
Navios Europe I
Investment in affiliates			500	500
Navios Europe I \| Navios Revolving Loans I
Available amount of loan facility			0	0
Navios Europe II
Investment in affiliates			$ 700	$ 700

Notes Receivable (Details)		6 Months Ended	12 Months Ended
Notes Receivable (Details)	Jan. 12, 2017 USD ($)	Jul. 15, 2016 USD ($)	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jul. 18, 2016 USD ($)
Deferred revenue, current			$ 15,256,000	$ 15,143,000
Deferred revenue, noncurrent			4,366,000	16,468,000
Net proceeds on sale					$ 20,842,000
Loss on sale of securities			0	0	19,435,000
Interest income			4,408,000	3,277,000	541,000
Net cash proceeds from sale of vessels			76,264,000	113,818,000	0
Notes receivable, current			4,764,000	4,802,000
Notes receivable, net of current portion - Book Value			$ 11,629,000	15,897,000
Notes receivable					6,112,000
Sale of MSC Cristina
Debt Instrument Interest Rate			6.00%
Interest income			$ 710,000	961,000
Gross sale price	$ 126,000,000
Net cash proceeds from sale of vessels	107,250,000
Notes receivable, net	$ 18,750,000
Notes receivable, current			4,688,000
Notes receivable, net of current portion - Book Value			$ 4,687,000
Repayment installments			16
Repayment frequency			quarterly
Accrued interest income			$ 76,000	115,000
Hyundai Merchant Marine Co., Ltd.
Deferred revenue, current			12,101,000	12,102,000
Deferred revenue, noncurrent			4,366,000	16,468,000
Trading Securities						$ 40,277,000
Unsecured Notes						$ 5,931,000
Deferred revenue amortization			12,102,000	12,102,000	5,537,000
Notes receivable			6,942,000	6,522,000
Hyundai Merchant Marine Co., Ltd. \| Interest Income and Discount Unwinding
Interest income			$ 420,000	$ 410,000	$ 180,000
Hyundai Merchant Marine Co., Ltd. \| Container vessels \| Restructuring Agreement
Charter Revenue		$ 38,461,000
Hyundai Merchant Marine Co., Ltd. \| Senior Notes \| Container vessels \| Restructuring Agreement
Trading securities equity number of shares \| shares			3,657
Proceeds From Debt			$ 7,692,000
Debt Instrument Interest Rate			3.00%
Maturity Date			Jul. 31, 2024
Hyundai Merchant Marine Co., Ltd. \| July 18, 2016 until December 31, 2019 \| Container vessels \| Restructuring Agreement
Charter Revenue			$ 24,400
Effective Date of Arrangements			Jul. 18, 2016
Termination date			Dec. 31, 2019
Hyundai Merchant Marine Co., Ltd. \| From January 1, 2020 and thereafter \| Container vessels \| Restructuring Agreement
Charter Revenue			$ 30,500
Effective Date of Arrangements			Jan. 01, 2020

Investment In Affiliates - Europe II (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Feb. 18, 2015 USD ($)
Proceeds from long-term debt and financial liability, net		$ 83,300	$ 514,703	$ 29,000
Debt Instrument Unamortized Discount		6,629	10,824
Long- term debt		507,485	493,463
Investment in affiliates		66,296	52,122
Portion of the carrying balance of related party loan		27,657	11,706
Investment income / (loss)		$ 3,957	866	$ 0
Navios Europe II
Ownership percentage		5.00%				5.00%
Number of vessels acquired					14
Cash purchase price					$ 145,550
Estimated maximum potential loss		$ 16,097	10,472
Navios Revolvings Loans II \| Navios Europe II
Portion of the carrying balance of related party loan		15,397	9,772
Navios Term Loans II \| Navios Europe II
Investment in affiliates		700
Junior Loan II \| Navios Europe II
Debt instrument face amount						$ 182,150
Debt instrument fair value						$ 99,147
Senior Loans II \| Navios Europe II
Proceeds from long-term debt and financial liability, net					131,550
Debt Instrument Unamortized Discount					3,375
Navios Holdings \| Navios Europe II
Ownership percentage						47.50%
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolvings Loans II \| Navios Europe II
Revolving loan facility maximum borrowing capacity						$ 43,500
Increase in available amount of loan facility	$ 14,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans II \| Navios Europe II
Long- term debt					$ 14,000
Navios Acquisitions \| Navios Europe II
Ownership percentage						47.50%
Navios Europe II
Investment in affiliates		700	700
Within caption "Other Income" \| Navios Europe II
Investment income / (loss)		$ 0	$ 84

Cash Distributions and Earnings per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Distribution Made To Limited Partner [Line Items]
Description of the distribution amount per unit for all classes of units		The first 98% of the quarterly distribution is paid to all common unitholders. The incentive distributions rights (held by the General Partner) apply only after a minimum quarterly distribution of $0.4025.
Annual cash distribution per unit		$ 0.06
Description of loss allocation		Net loss per unit undistributed is determined by taking the distributions in excess of net income and allocating between common units and general partner units on a 98%-2% basis.
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		3,154,112	1,353,335
Common and subordinated units
Distribution Made To Limited Partner [Line Items]
Net loss allocated to each class of unit		98.00%
General Partner Units
Distribution Made To Limited Partner [Line Items]
Net loss allocated to each class of unit		2.00%
Installment 1 - FY 2018
Distribution Made To Limited Partner [Line Items]
Declaration date		Apr. 30, 2018
Cash distribution declared per unit		$ 0.02
Distribution date		May 14, 2018
Date of record		May 10, 2018
Aggregate amount of cash distributions paid		$ 3,420
Installment 2 - FY 2018
Distribution Made To Limited Partner [Line Items]
Declaration date		Jul. 31, 2018
Cash distribution declared per unit		$ 0.02
Distribution date		Aug. 10, 2018
Date of record		Aug. 07, 2018
Aggregate amount of cash distributions paid		$ 3,420
Installment 3 - FY 2018
Distribution Made To Limited Partner [Line Items]
Declaration date		Oct. 31, 2018
Cash distribution declared per unit		$ 0.02
Distribution date		Nov. 14, 2018
Date of record		Nov. 07, 2018
Aggregate amount of cash distributions paid		$ 3,420
Installment 4 - FY 2018 \| Subsequent Event
Distribution Made To Limited Partner [Line Items]
Declaration date	Jan. 31, 2019
Cash distribution declared per unit	$ 0.02
Distribution date	Feb. 14, 2019
Date of record	Feb. 11, 2019
Aggregate amount of cash distributions paid	$ 3,458

Other Income (Details) - USD ($) $ in Thousands	10 Months Ended	11 Months Ended	12 Months Ended
Other Income (Details) - USD ($) $ in Thousands	Nov. 10, 2016	Nov. 15, 2012	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income			$ 1,554	$ 9,884	$ 14,523
Amounts due from related parties, long-term - Fair Value			28,880	34,891
July 2012 Credit Facility
Gain on debt repayment	$ 2,140
Repayment of debt	28,052
Line Of Credit OF Facility Increase Decrease For Period Net	$ 30,192
Navios Holdings
Income from credit default insurance				7,242	9,153
Other Income				$ 7,623	$ 9,635
Amounts due from related parties, long-term - Fair Value			17,612
Accrued interest and discount unwinding			389
Write down on receivables			$ 2,000
Navios Holdings
Supplemental credit default insurance maximum cash payment		$ 20,000

Other Expense (Details) - USD ($) $ in Thousands		12 Months Ended
Other Expense (Details) - USD ($) $ in Thousands	Jan. 12, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property Plant And Equipment [Line Items]
Proceeds from sale of vessel		$ 76,264	$ 113,818	$ 0
Gain / (Loss) on sale of vessel		(53)	(1,260)	0
Allowance for doubtful accounts		0	1,495	$ 0
Discount of the Navios Holding Guarantee		777
Write down of guarantee claim receivable		$ 2,000
Hanjin Shipping Co. Ltd
Property Plant And Equipment [Line Items]
Allowance for doubtful accounts			1,495
MSC Cristina
Property Plant And Equipment [Line Items]
Vessel held for sale	$ 125,000
Proceeds from sale of vessel	$ 123,740
Gain / (Loss) on sale of vessel			$ (1,260)

Subsequent Events (Details) $ / shares in Units, $ in Thousands	1 Months Ended		2 Months Ended	3 Months Ended		5 Months Ended	12 Months Ended
	Feb. 12, 2019 USD ($)	Jan. 31, 2019 USD ($) $ / shares	Feb. 28, 2019 USD ($)	Apr. 05, 2019 USD ($)	Mar. 21, 2019 USD ($)	May 31, 2016 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Subsequent Event [Line Items]
Proceeds from sale of vessel							$ 76,264	$ 113,818	$ 0
Payments to fund loans							$ 0	$ 4,050	$ 0
Term Loan B Credit Facility including addition
Subsequent Event [Line Items]
Repayment of debt						$ 25,000
Subsequent Event \| Navios Europe I \| Navios Revolving Loans I
Subsequent Event [Line Items]
Payments to fund loans			$ 4,000
Subsequent Event \| Navios Galaxy I
Subsequent Event [Line Items]
Vessel type					Panamax
Vessel capacity in DWT					74,195
Vessel year built					2001
Proceeds from sale of vessel					$ 5,978
Subsequent Event \| Unit Repurchase Program \| Maximum
Subsequent Event [Line Items]
Authorized Amount		$ 50,000
Subsequent Event \| February 2019 Credit Facility
Subsequent Event [Line Items]
Credit Facility, Initiation Date	Feb. 12, 2019
Credit facility, maximum borrowing capacity	$ 66,000
Number of loan tranches	4
Interest rate description	LIBOR plus 260 bps
Interest rate percentage	2.60%
Debt instrument term	5 years
Subsequent Event \| April 2019 Credit Facility
Subsequent Event [Line Items]
Credit Facility, Initiation Date				Apr. 05, 2019
Credit facility, maximum borrowing capacity				$ 40,000
Number of loan tranches				2
Interest rate description				LIBOR plus 275 bps
Interest rate percentage				2.75%
Debt instrument term				5 years
Subsequent Event \| Term Loan B Credit Facility including addition
Subsequent Event [Line Items]
Repayment of debt				$ 21,000
Collateral released				2 vessels
Installment 4 - FY 2018 \| Subsequent Event
Subsequent Event [Line Items]
Declaration date		Jan. 31, 2019
Cash distribution declared per unit \| $ / shares		$ 0.02
Distribution date		Feb. 14, 2019
Date of record		Feb. 11, 2019
Aggregate amount of cash distributions paid		$ 3,458