CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (5,798)	$ 14,366	$ 77,220	$ 96,457
Other Comprehensive Income:
Change in unfunded benefit obligation for pension and other postretirement benefit plans - net of taxes of $73, $82, $146 and $166, respectively	272	304	821	927
Total other comprehensive income	272	304	821	927
Comprehensive income (loss)	$ (5,526)	$ 14,670	$ 78,041	$ 97,384