CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 14,716	$ (5,798)	$ 87,045	$ 77,220
Other Comprehensive Income (Loss):
Change in unfunded benefit obligation for pension and other postretirement benefit plans - net of taxes of ($5), $72, ($10) and $146, respectively	(19)	272	(56)	821
Total other comprehensive income (loss)	(19)	272	(56)	821
Comprehensive income (loss)	$ 14,697	$ (5,526)	$ 86,989	$ 78,041