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v3.25.1

Consolidated Statements of Partners' Capital (Unaudited) (Parentheticals) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 USD ($)
Allocation to unitholders | $ 2,150
Limited Partner [Member] |
Allocation to unitholders | 2,110
General Partner [Member] |
Allocation to unitholders | $ 40

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

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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |