Supplemental Financial Information - Noncash Operating, Investing and Financing Activities (Detail) - USD ($) $ in Thousands	2 Months Ended	4 Months Ended	6 Months Ended
	Jun. 30, 2021	Apr. 23, 2021	Jun. 30, 2020
Condensed Financial Statements, Captions [Line Items]
Accrued but unpaid capital expenditures at period end	$ 8,805	$ 18,617	$ 15,593
Accrued but unpaid debt issuance costs and arrangement fees	7,047	7,588
Common stock withheld for payroll tax obligations			394
Cash interest payments	1,346	37,593	19,843
Cash paid for reorganization items, net	15,809	37,566	274
Foreign [Member]
Cash income taxes paid, net of (refunds):
Cash income taxes paid, net of refunds	$ 101	3,460	9,813
State [Member]
Cash income taxes paid, net of (refunds):
Cash income taxes paid, net of refunds		$ (34)	$ (14)