Revenue from Contracts with Customers - Summary of Significant Changes in Contract Assets and Contract Liabilities Balances (Detail) - USD ($) $ in Thousands	2 Months Ended	4 Months Ended
	Jun. 30, 2021	Apr. 23, 2021
Revenue From Contract With Customer [Abstract]
Contract assets at January 1, 2021		$ 2,870
Contract liabilities at January 1, 2021		(56,927)
Net balance beginning	$ 418	(54,057)
Decrease due to amortization of revenue included in the beginning contract liability balance		15,341
Increase due to cash received, excluding amounts recognized as revenue during the period	(53,309)	(22,553)
Increase due to revenue recognized during the period but contingent on future performance	509	1,442
Decrease due to transfer to receivables during the period		(700)
Write off of deferred revenue due to fresh start accounting		60,945
Net balance ending	(52,382)	$ 418
Contract assets at June 30, 2021	927
Contract liabilities at June 30, 2021	$ (53,309)