The date when the facility was drawn down.

No definition available.

Name:	nmm_DrawnDownDate
Namespace Prefix:	nmm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of loans' discount.

+ References

No definition available.

+ Details

Name:	nmm_LineOfCreditDiscount
Namespace Prefix:	nmm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Line of credit facility, extension period.

+ References

No definition available.

+ Details

Name:	nmm_LineOfCreditFacilityExtensionPeriod
Namespace Prefix:	nmm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in YYYY-MM format.

+ References

No definition available.

+ Details

Name:	nmm_LineOfCreditFacilityMaturityDate
Namespace Prefix:	nmm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period from the prepayment of sale and leaseback transaction accounted for as financing arrangement.

+ References

No definition available.

+ Details

Name:	nmm_PrepaymentOfSaleAndLeasebackTransaction
Namespace Prefix:	nmm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The vessels' capacity in deadweight tonnage (DWT).

+ References

No definition available.

+ Details

Name:	nmm_VesselCapacity
Namespace Prefix:	nmm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The vessels' capacity in Twenty- foot Equivalent Unit (TEU).

+ References

No definition available.

+ Details

Name:	nmm_VesselCapacityInTEU
Namespace Prefix:	nmm_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The type of vessel.

+ References

No definition available.

+ Details

Name:	nmm_VesselType
Namespace Prefix:	nmm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The year that the vessel was built.

+ References

No definition available.

+ Details

Name:	nmm_VesselYearBuilt
Namespace Prefix:	nmm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of reference rate used for variable rate of debt instrument.

+ References

No definition available.

+ Details

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

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

+ Details

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

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

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

- Definition

The liability due as of the balance sheet date for leasebacks accounted for using the deposit method.

+ References

+ Details

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

- Definition

The date of the transaction involving the sale of the property to another party and the lease of the property back to the seller.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 840
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481295/840-40-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479741/842-40-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479741/842-40-50-1

+ Details

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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

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nmm_OneNewBuildingTankerVesselMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nmm_TwoContainershipsAndTwoAframaxMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=nmm_TwelveContainershipsMember
Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
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Borrowings - Financial Liabilities (Details Narrative) $ in Thousands			1 Months Ended				6 Months Ended		12 Months Ended
	Apr. 01, 2025 Vessel capacity in DWT	Mar. 19, 2025	May 31, 2024 USD ($) Vessel capacity in DWT	Jan. 31, 2024 USD ($) Vessel capacity in DWT	Nov. 30, 2023 USD ($) Vessel capacity in DWT	Oct. 31, 2022	Jun. 30, 2025 USD ($) Capacity Vessel capacity in DWT	Jun. 30, 2024 Capacity	Dec. 31, 2024 USD ($)	Feb. 28, 2025 USD ($)
Sale Leaseback Transaction [Line Items]
Vessel year built							2025	2024
Vessel capacity in DWT \| Capacity							7,700	5,300
Finance lease liabilities							$ 317,447		$ 325,784
Financial Liabilities [Member] \| One New Building Tanker Vessel [Member]
Sale Leaseback Transaction [Line Items]
Sale leaseback transaction, date							January 2024
Finance lease, liability				$ 45,260
Vessel type				Aframax/LR2
Vessel capacity in DWT \| Vessel capacity in DWT	115,762			115,000
Finance lease liabilities							$ 45,260
Maturity date							seven years after the drawdown date
Debt instrument, description of variable rate basis							Term SOFR
Debt instrument, basis spread on variable rate							1.90%
Financial Liabilities [Member] \| Two Containerships And Two Aframax [Member]
Sale Leaseback Transaction [Line Items]
Sale leaseback transaction, date							November 2023
Vessel capacity in TEU \| Vessel capacity in DWT					5,300
Amount drawn down							$ 43,850		$ 131,750
Finance lease liabilities					$ 175,600		$ 170,380
Maturity date							ten years after each drawdown date
Debt instrument, description of variable rate basis							Term SOFR
Debt instrument, basis spread on variable rate							2.00%
Financial Liabilities [Member] \| Navios Nave Polaris [Member]
Sale Leaseback Transaction [Line Items]
Vessel year built							2025
Vessel type							Aframax/LR2
Vessel capacity in DWT \| Vessel capacity in DWT							115,807
Financial Liabilities [Member] \| 12 Containerships [Member]
Sale Leaseback Transaction [Line Items]
Sale leaseback transaction, date							October 2022
Finance lease, liability							$ 100,000
Vessel year built			2007
Vessel capacity in TEU \| Vessel capacity in DWT			3,450
Finance lease liabilities							$ 43,109
Maturity date		first quarter of 2029				first quarter of 2026
Extension period		3 years
Debt instrument, description of variable rate basis		Term SOFR				Term SOFR
Debt instrument, basis spread on variable rate		1.75%				2.10%
Drawn down date							October 31, 2022
Line of credit discount							$ 800
Prepayment of sale and leaseback transaction			$ 4,411
Financial Liabilities [Member] \| Panamax Vessels [Member]
Sale Leaseback Transaction [Line Items]
Sale leaseback transaction, date							February 2022
Finance lease, liability							$ 12,000
Finance lease liabilities										$ 6,165