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Other Accrued Liabilities (Tables)
6 Months Ended
Jun. 30, 2025
Other Liabilities Disclosure [Abstract]  
Schedule of Accrued Liabilities
June 30,
2025
December 31,
2024
Subsidence Liability$108,100 $88,259 
Accrued Compensation and Benefits59,143 54,138 
Accrued Other Taxes44,564 6,973 
Other67,797 31,928 
Current Portion of Long-Term Liabilities:  
Asset Retirement Obligations41,496 35,554 
Pneumoconiosis Benefits25,532 16,389 
Postretirement Benefits Other than Pensions21,310 17,887 
Workers' Compensation17,679 11,056 
Total Other Accrued Liabilities$385,621 $262,184