Fair value as of the balance sheet date of noncurrent receivables due from related parties.

No definition available.

Name:	NMM_DueFromRelatedPartiesNoncurrentFairValueDisclosure
Namespace Prefix:	NMM_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of direct write-downs of receivables due from a related party.

+ References

No definition available.

+ Details

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

- Definition

The number of installments for the debt repayment.

+ References

No definition available.

+ Details

Name:	NMM_NumberOfInstallments
Namespace Prefix:	NMM_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum amount of cash payment of supplemental credit default insurance provided.

+ References

No definition available.

+ Details

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

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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

- Definition

Amount of revenue and income classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04.4)
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

+ Details

Name:	us-gaap_OtherIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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

- Details

Name:	srt_StatementScenarioAxis=NMM_FourthQuarter2019Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_StatementScenarioAxis=NMM_ThirdQuarter2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=NMM_FirstQuarter2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Other Income (Details) $ in Thousands	3 Months Ended		6 Months Ended		7 Months Ended	11 Months Ended
Other Income (Details) $ in Thousands	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jul. 31, 2019 USD ($)	Nov. 15, 2012 USD ($)	Dec. 31, 2018 USD ($)
Other Income	$ 374	$ 146	$ 591	$ 720
Amounts due from related parties, long-term - Fair Value	$ 38,086		38,086				$ 28,880
Navios Holdings
Supplemental credit default insurance maximum cash payment						$ 20,000
Due From Related Party Write Offs			$ 3,638
Number of installments					3
Navios Holdings \| Fourth quarter 2019 \| Subsequent Event
Repayment amount					$ 4,362
Navios Holdings \| Third quarter 2020 \| Subsequent Event
Repayment amount					5,000
Navios Holdings \| First quarter 2021 \| Subsequent Event
Repayment amount					$ 5,000