Distribution Made to Limited Partner, Unit Redemption

No definition available.

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Namespace Prefix:	nrp_
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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

The number of preferred units redeemed.

+ References

No definition available.

+ Details

Name:	nrp_PreferredUnitsNumberOfRedeemedUnits
Namespace Prefix:	nrp_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482987/272-10-50-3

+ Details

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

- Definition

The excess of (1) fair value of the consideration transferred to the holders of the preferred stock over (2) the carrying amount of the preferred stock in the registrant's balance sheet, during the accounting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480408/260-10-S99-2

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Note 5 - Common and Preferred Unit Distributions (Details Textual) - USD ($) $ in Thousands	1 Months Ended								12 Months Ended
	Sep. 30, 2024	May 31, 2024	Sep. 30, 2023	Aug. 31, 2023	Jun. 30, 2023	May 31, 2023	Feb. 28, 2023	Feb. 28, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Allocated to Preferred Unit Holders									$ (4,248)	$ (16,719)	$ (30,000)
Preferred Stock Redemption Premium									$ 24,485	60,929	(0)
Preferred Units, Number of Redeemed Units (in shares)	31,666	40,000	15,001	35,000	45,000	35,834	47,499		71,666
Distribution Made to Limited Partner, Unit Redemption (in shares)								19,321
Common Unitholders And General Partner [Member]
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Allocated to Preferred Unit Holders									$ (4,200)	$ (16,700)	$ (30,000)
Partner, General [Member]
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest									2.00%