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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advance Royalties (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Advance Royalties |  |
Advance royalties, affiliates | $ 60,608 | $ 55,613
Advance royalties, third-parties | 14,661 | 12,869
Total advance royalties, net | $ 75,269 | $ 68,482

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- Definition Carrying amount as of the balance sheet date of capitalized amounts paid for coal mineral royalties. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of capitalized amounts paid to affiliates for coal mineral royalties. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of capitalized amounts paid to third parties for coal mineral royalties. + References No definition available. + Details
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Namespace Prefix: | arlp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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