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PARTNERS' CAPITAL - Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  | 6 Months Ended | 12 Months Ended
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Aug. 12, 2022 | May 13, 2022 | Feb. 14, 2022 | Nov. 12, 2021 | Aug. 13, 2021 | May 14, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |
Quarterly distribution paid (in dollars per unit) | $ 0.4000 | $ 0.3500 | $ 0.2500 | $ 0.2000 | $ 0.1000 | $ 0.1000 | $ 1.0000 |  | $ 0.4000
Total Cash Distribution |  | $ 45,810 | $ 32,750 | $ 26,072 | $ 13,041 | $ 13,045 | $ 78,560 | $ 13,045 | $ 52,158

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- Definition Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP). + References No definition available. + Details
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Namespace Prefix: | arlp_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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- Definition The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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