CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 48,125	$ 14,793
Other comprehensive income
Current period pension and postretirement plan adjustment, net of $864 tax expense and $213 tax benefit in 2021 and 2020, respectively	2,851	(697)
Reclassification of pension and postretirement adjustments into earnings, net of $170 and $129 tax benefit in 2021 and 2020, respectively	572	435
Total other comprehensive income	3,423	(262)
Comprehensive income	$ 51,548	$ 14,531