Components of Coal Workers' Pneumoconiosis and Workers' Compensation Net Periodic Benefit Costs (Tables)

3 Months Ended

Mar. 31, 2023

Retirement Benefits [Abstract]

Schedule of Changes in Accumulated Postemployment Benefit Obligations

The components of Net Periodic Benefit Cost are as follows:

	CWP				Workers' Compensation
	Three Months Ended March 31,				Three Months Ended March 31,
	2023		2022		2023		2022
Service Cost	$	578	$	726	$	1,399	$	1,230
Interest Cost	2,071		1,265		628		342
Amortization of Actuarial (Gain) Loss	(261)		1,060		(512)		(105)
State Administrative Fees and Insurance Bond Premiums	—		—		545		437
Net Periodic Benefit Cost	$	2,388	$	3,051	$	2,060	$	1,904