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Consolidated Statements of Partners' Capital (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allocation to unitholders	$ 4,248	$ 16,719	$ 30,000
Allocation to unitholders	$ 4,248	$ 16,719	$ 30,000

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- Definition

Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest, Allocated to Preferred Unit Holders

+ References

No definition available.

+ Details

Name:	nrp_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterestAllocatedToPreferredUnitHolders
Namespace Prefix:	nrp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration