CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 05, 2021	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 250,228	$ 101,982	$ 481,902	$ 168,948
Other comprehensive income (loss)
Foreign currency translation adjustments	(116)	0	0	0
Net changes in pension and other postretirement plan assets and benefit obligations recognized in other comprehensive income (loss), net of tax provision (benefit) of $(940), $(928), $1,476 and $59 for the years ended December 31, 2023 and 2022, the period from February 6 through December 31, 2021, and period from January 1 through February 5, 2021, respectively	224	5,389	(615)	(1,742)
Other comprehensive income (loss), net	108	5,389	(615)	(1,742)
Comprehensive income (loss)	$ 250,336	$ 107,371	$ 481,287	$ 167,206