Future Minimum Contractual Revenue - Operating lease, Payments to be received (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Leases [Abstract]
2022	$ 649,858
2023	427,190
2024	355,629
2025	293,848
2026	215,074
2027 and thereafter	404,381
Total	$ 2,345,980

Future rental payments receivable within one year of the balance sheet date under an operating lease.

No definition available.

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

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

No definition available.

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

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

No definition available.

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

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

No definition available.

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

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

No definition available.

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

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

No definition available.

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

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

No definition available.

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

No definition available.