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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - CONDENSED STATEMENT OF OPERATIONS (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
EXPENSES: |  |  |
General and administrative | $ 70,160 | $ 59,806 | $ 72,997
Total operating expenses | 1,350,773 | 1,410,981 | 1,702,222
INCOME (LOSS) FROM OPERATIONS | 219,203 | (82,852) | 259,498
Interest income | 88 | 135 | 379
NET INCOME (LOSS) ATTRIBUTABLE TO ARLP | $ 178,157 | $ (129,220) | $ 399,414
EARNINGS PER LIMITED PARTNER UNIT - BASIC (in dollars per unit) | $ 1.36 | $ (1.02) | $ 3.07
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - BASIC (in units) | 127,195,219 | 127,164,659 | 128,116,670
AHGP as the parent company |  |  |
EXPENSES: |  |  |
General and administrative |  |  | $ 41
Total operating expenses |  |  | 41
INCOME (LOSS) FROM OPERATIONS |  |  | (41)
Interest income |  | $ 24 | 34
Equity in earnings of consolidated subsidiaries | $ 178,157 | (129,244) | 399,421
NET INCOME (LOSS) ATTRIBUTABLE TO ARLP | $ 178,157 | $ (129,220) | $ 399,414
EARNINGS PER LIMITED PARTNER UNIT - BASIC (in dollars per unit) | $ 1.36 | $ (1.02) | $ 3.07
EARNINGS PER LIMITED PARTNER UNIT - DILUTED (in dollars per unit) | $ 1.36 | $ (1.02) | $ 3.07
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - BASIC (in units) | 127,195,219 | 127,164,659 | 128,116,670
WEIGHTED-AVERAGE NUMBER OF UNITS OUTSTANDING - DILUTED (in units) | 127,195,219 | 127,164,659 | 128,116,670

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