Name:	NMM_FutureDailyRevenue
Namespace Prefix:	NMM_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

The number of shares that an Entity acquires in a noncash (or part noncash) transaction.

No definition available.

Name:	NMM_NoncashOrPartNoncashAcquisitionInvestmentNumberOfShares
Namespace Prefix:	NMM_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The number of vessels acquired by the company.

No definition available.

Name:	NMM_NumberOfVesselsAcquired
Namespace Prefix:	NMM_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

This element shows the percentage of increase/ decrease of the charter rate under the arrangement with the charterer.

No definition available.

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

The type of vessel.

No definition available.

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

Contractual interest rate for funds borrowed, under the debt agreement.

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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

The fair value of notes assumed in noncash investing or financing activities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Name:	us-gaap_NotesAssumed1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The cash inflow associated with the sale of equity securities classified as available-for-sale securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Name:	us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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

Name:	us-gaap_MajorCustomersAxis=NMM_HyundaiMerchantMarineCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementScenarioAxis=NMM_PeriodOfCharterHireRestructuringAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: