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)	$ 158,323	$ 33,585	$ 332,202	$ 33,986
Other comprehensive income (loss)
Net changes in pension and other postretirement plan assets and benefit obligations recognized in other comprehensive income (loss), net of tax provision (benefit) of zero and $3 for the three months ended September 30, 2023 and 2022, respectively, and $2,436 and $3 for the nine months ended September 30, 2023 and 2022, respectively	(65)	(1,230)	(2,210)	(2,817)
Other comprehensive income (loss), net	(65)	(1,230)	(2,210)	(2,817)
Comprehensive income (loss)	$ 158,258	$ 32,355	$ 329,992	$ 31,169