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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
NET INCOME $ 192,678 $ 38,373
OTHER COMPREHENSIVE INCOME:    
OTHER COMPREHENSIVE INCOME 565 790
COMPREHENSIVE INCOME 193,243 39,163
Less: Comprehensive income attributable to noncontrolling interest (1,493) (290)
COMPREHENSIVE INCOME ATTRIBUTABLE TO ARLP 191,750 38,873
Defined benefit pension plan    
OTHER COMPREHENSIVE INCOME:    
Amortization of prior service cost (1) 47 47
Amortization of net actuarial loss (1) 173 483
Total recognized in accumulated other comprehensive loss 220 530
Pneumoconiosis benefits    
OTHER COMPREHENSIVE INCOME:    
Amortization of net actuarial loss (1) 345 260
Total recognized in accumulated other comprehensive loss $ 345 $ 260