Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment, Net [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment, net includes the following:

	December 31
	2023		2022
Coal lands and real estate	$	58,353	$	60,277
Mineral interests	68,150		31,436
Plant and equipment	325,655		290,511
Property, plant and equipment, at cost	452,158		382,224
Less allowances for depreciation, depletion, amortization and impairment	228,256		164,272
	$	223,902	$	217,952