This element refers to the amount commited to fund.

No definition available.

Name:	NMM_AmountUnderFundingCommitment
Namespace Prefix:	NMM_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The percentage of ownership of common units excluding general partner interest.

+ References

No definition available.

+ Details

Name:	NMM_CommonUnitsInterestPercentage
Namespace Prefix:	NMM_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Refers to the estimated maximum potential loss.

+ References

No definition available.

+ Details

Name:	NMM_EstimatedMaximumPotentialLoss
Namespace Prefix:	NMM_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The distribution percentage defined in the loan agreement.

+ References

No definition available.

+ Details

Name:	NMM_PreferredDistributionPercentage
Namespace Prefix:	NMM_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Borrowings from a revolving loan facility used to finance working capital requirements.

+ References

No definition available.

+ Details

Name:	NMM_RevolvingCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	NMM_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of limited partner units outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 5

-Subparagraph (SAB TOPIC 4.F)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 1

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section F

+ Details

Name:	us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

+ Details

Name:	us-gaap_LoansAndLeasesReceivableRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=NMM_NaviosEuropeMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=NMM_NaviosEurope2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=NMM_NaviosRevolvingLoansMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=NMM_NaviosTermLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=NMM_NaviosHoldingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=NMM_NaviosHoldingsAcquisitionPartnersMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=NMM_NaviosAcquisitionsMember
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Transactions with Related Parties and Affiliates - Revolving Loans to Navios Europe and Others (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Feb. 11, 2015	Feb. 18, 2015	Jun. 30, 2015	Oct. 09, 2013	Dec. 31, 2014	Jun. 08, 2015	Dec. 18, 2013
Investment in affiliates			$ 993		$ 521
Loans receivable from affiliates			1,096		$ 750
Available amount of loan facility			$ 123,000
Common units outstanding			83,079,710		77,359,163
Navios GP L.L.C. general partner interest in Navios Partners	2.00%		2.00%
Navios Europe I
Ownership percentage			5.00%	5.00%
Investment in affiliates			$ 543
Loans receivable from affiliates			750
Estimated maximum potential loss			$ 1,293
Navios Europe II
Ownership percentage		5.00%	5.00%
Investment in affiliates			$ 450
Loans receivable from affiliates			346
Estimated maximum potential loss			796
Navios Revolving Loans \| Navios Europe I
Loans receivable from affiliates			750
Amount commited to fund			455		$ 455
Navios Revolving Loans \| Navios Europe II
Loans receivable from affiliates			346
Amount commited to fund			1,475
Navios Term Loans \| Navios Europe I
Investment in affiliates			500
Navios Term Loans \| Navios Europe II
Investment in affiliates			$ 450
Navios Holdings
Common units outstanding			15,344,310
Common units interest percentage			18.10%
Navios GP L.L.C. general partner interest in Navios Partners			2.00%
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 Europe I
Revolving loan facility maximum borrowing capacity			$ 0	$ 24,100
Preferred distribution percentage			12.70%
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Europe II
Revolving loan facility maximum borrowing capacity		$ 38,500
Preferred distribution percentage			18.00%
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans \| Navios Europe I
Available amount of loan facility			$ 9,100
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Revolving Loans \| Navios Europe II
Available amount of loan facility			29,500
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans \| Navios Europe I
Long- term debt			10,000				$ 10,000
Navios Holdings, Navios Acquisition and Navios Partners \| Navios Term Loans \| Navios Europe II
Long- term debt			$ 9,000			$ 9,000
Navios Acquisitions \| Navios Europe I
Ownership percentage				47.50%
Navios Acquisitions \| Navios Europe II
Ownership percentage		47.50%