Borrowings - Additional Information (Details) $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($)
Debt Instrument [Line Items]
Covenant compliance	As of June 30, 2017, 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.
Navios Containers
Debt Instrument [Line Items]
Covenant compliance	As of June 30, 2017, Navios Containers was in compliance with all of the covenants under each of its credit facilities.
New Term Loan B Facility \| Minimum
Debt Instrument [Line Items]
Loan to value ratio	80.00%
New Term Loan B Facility \| Maximum
Debt Instrument [Line Items]
Loan to value ratio	100.00%
July 2012 Credit Facility and June 2017 Credit Facility
Debt Instrument [Line Items]
Minimum net worth required for compliance	$ 135,000
Minimum free consolidated liquidity per vessel	$ 650
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	130.00%
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%

The EBITDA to net interest expenses ratio value.

No definition available.

Name:	NMM_EBITDAToNetInterestExpensesRatio
Namespace Prefix:	NMM_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The loan to value ratio value.

+ References

No definition available.

+ Details

Name:	NMM_LoanToValueRatio
Namespace Prefix:	NMM_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The lowest amount of liquid assets required by loan agreement.

+ References

No definition available.

+ Details

Name:	NMM_MinimumLiquidAssetsRequiredForCompliance
Namespace Prefix:	NMM_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The total liabilities to total assets ratio value.

+ References

No definition available.

+ Details

Name:	NMM_RatioOfTotalLiabilitiesToTotalAssets
Namespace Prefix:	NMM_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The security cover ratio value.

+ References

No definition available.

+ Details

Name:	NMM_SecurityCoverRatio
Namespace Prefix:	NMM_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentCovenantCompliance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage investment held by members or limited partners of 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_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)(a)
-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998

+ Details

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

- Details

Name:	dei_LegalEntityAxis=NMM_NaviosContainersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=NMM_NewTermLoanBFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=NMM_July2012June2017CreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=NMM_NaviosHoldingsIIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: