Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The gross and net balances are set forth in the following table:

	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Balance
Balance at December 31, 2023
Coal supply agreement	$	84,200	$	(78,194)	$	6,006
Balance at December 31, 2022
Coal supply agreement	$	84,200	$	(56,145)	$	28,055