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

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

The increase (decrease) during the reporting period in the amount due from borrowers for interest payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

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

- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_InsuranceRecoveries
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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=114873790&loc=SL114874131-224263

+ Details

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

- Details

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

- Details

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

Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		11 Months Ended
Other Income (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Nov. 15, 2012	Dec. 31, 2017
Other Income	$ 146	$ 2,950	$ 720	$ 6,070
Amounts due from related parties, long-term - Fair Value	44,009		44,009			$ 34,891
Navios Holdings
Income from credit default insurance		2,276		4,527
Other Income		$ 2,396		$ 4,765
Navios Holdings
Supplemental credit default insurance maximum cash payment					$ 20,000
Amounts due from related parties, long-term - Fair Value	19,416		19,416
Accrued interest and discount unwinding	$ 97		$ 193