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Other Accrued Liabilities
 9 Months Ended
Sep. 30, 2024
Other Liabilities Disclosure [Abstract]  
Other Accrued Liabilities OTHER ACCRUED LIABILITIES:
September 30,
2024		December 31,
2023
Subsidence Liability$112,678 $105,322 
Accrued Compensation and Benefits48,908 73,763 
Accrued Other Taxes10,092 12,276 
Accrued Income Taxes9,569 — 
Deferred Revenue3,775 9,517 
Accrued Interest3,125 6,283 
Other16,851 10,457 
Current Portion of Long-Term Liabilities:  
Asset Retirement Obligations33,984 28,571 
Postretirement Benefits Other than Pensions19,237 19,327 
Pneumoconiosis Benefits14,496 15,071 
Workers' Compensation9,293 10,019 
Total Other Accrued Liabilities$282,008 $290,606