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Other Accrued Liabilities
 12 Months Ended
Dec. 31, 2024
Other Liabilities Disclosure [Abstract]  
Other Accrued Liabilities OTHER ACCRUED LIABILITIES:
 December 31,
 20242023
Subsidence Liability$88,259 $105,322 
Accrued Compensation and Benefits54,138 73,763 
Other38,289 38,533 
Current Portion of Long-Term Liabilities:  
Asset Retirement Obligations35,554 28,571 
Postretirement Benefits Other than Pensions17,887 19,327 
Pneumoconiosis Benefits16,389 15,071 
Workers' Compensation11,056 10,019 
Total Other Accrued Liabilities$261,572 $290,606 
Certain prior period amounts in the table above, including Accrued Other Taxes, Accrued Interest and Deferred Revenue, were previously disclosed separately, but have been reclassified to Other to conform to the current year presentation.