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EARNINGS PER LIMITED PARTNER UNIT (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
EARNINGS PER LIMITED PARTNER UNIT |  |  |
NET INCOME ATTRIBUTABLE TO ARLP | $ 630,118 | $ 586,200 | $ 182,771
General partner's interest in net income attributable to ARLP | (1,384) | (9,010) | (4,614)
Limited partners' interest in net income attributable to ARLP | 628,734 | 577,190 | 178,157
Distributions to participating securities | (9,688) | (8,527) | (2,334)
Undistributed earnings attributable to participating securities | (7,203) | (10,576) | (2,403)
Net income (loss) attributable to ARLP available to limited partners | $ 611,843 | $ 558,087 | $ 173,420
Weighted-average limited partner units outstanding - basic (in units) | 127,180,312 | 127,195,219 | 127,195,219
Weighted-average limited partner units outstanding - diluted (in units) | 127,180,000 | 127,195,000 | 127,195,000
Earnings per limited partner unit - basic (in dollars per unit) | $ 4.81 | $ 4.39 | $ 1.36
Earnings per limited partner unit - diluted (in dollars per unit) | $ 4.81 | $ 4.39 | $ 1.36
Anti-dilutive under the treasury stock method (in units) | 2,922,384 | 3,540,385 | 1,967,672

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