Annual rate of increase of management fees.

No definition available.

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Namespace Prefix:	NMM_
Data Type:	num:percentItemType
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Period Type:	duration

- Definition

The amount charged as daily management fee.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount charges as a technical and commercial daily management fee.

+ References

No definition available.

+ Details

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

- Definition

The cash outflow for the purchase of a facility and equipment that provides water supply which includes wells, reservoirs, pumping stations, and control facilities; and waste water systems which includes the waste treatment and disposal facility and equipment to households and industry.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Professional and contract service expense includes cost reimbursements for support services related to contracted projects, outsourced management, technical and staff support.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

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- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
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- Details

Name:	srt_StatementScenarioAxis=NMM_AfterLiquidationOfNaviosEuropeIMember
Namespace Prefix:
Data Type:	na
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- Details

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- Details

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- Details

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- Details

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Summary of Significant Accounting Policies - Management Fees (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Total management fees	$ 68,188,000	$ 68,871,000	$ 67,310,000
Management Agreement
Property Plant And Equipment [Line Items]
Payments for ballast water treatment system and exhaust gas cleaning system installation	16,447,000	$ 134,000
From January 1, 2020 \| Extended Management Agreement
Property Plant And Equipment [Line Items]
Technical and commercial management daily fee	$ 50
After January 1, 2022 \| Extended Management Agreement
Property Plant And Equipment [Line Items]
Annual growth factor of management fees	3.00%
After liquidation of Navios Europe I \| Management Agreement
Property Plant And Equipment [Line Items]
Technical and commercial management daily fee	$ 50
Annual growth factor of management fees	3.00%
Ultra-Handymax Vessels \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	$ 4,230
Ultra-Handymax Vessels \| From January 1, 2020 \| Extended Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	4,350
Panamax Vessels \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	4,330
Panamax Vessels \| From January 1, 2020 \| Extended Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	4,450
Panamax Vessels \| After liquidation of Navios Europe I \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	6,100
Capesize Vessels \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	5,250
Capesize Vessels \| From January 1, 2020 \| Extended Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	5,410
Container Vessels of TEU 6,800 \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	6,700
Container Vessels of TEU 6,800 \| From January 1, 2020 \| Extended Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	6,900
Container Vessels of more than TEU 8,000 \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	7,400
Container Vessels of more than TEU 13,000 \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	8,750
Subpanamax Vessels \| After liquidation of Navios Europe I \| Management Agreement
Property Plant And Equipment [Line Items]
Daily management fee	$ 6,100