Revenue from Contracts with Customers - Summary of Significant Changes in Net Contract Assets and Contract Liabilities Balances (Detail) - USD ($) $ in Thousands		4 Months Ended	8 Months Ended	12 Months Ended
		Apr. 23, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Contract assets, beginning of period		$ 2,870	$ 418	$ 1,835	$ 6,314
Contract liabilities, beginning of period		(56,927)		(48,293)	(48,104)
Net balance at beginning of period		(54,057)	418	(46,458)	(41,790)
Decrease due to amortization of revenue that was included in the beginning contract liabilities balance		15,341		26,909	35,231
Increase due to cash received, excluding amounts recognized as revenue during the period		(22,553)	(48,293)	(2,445)	(44,081)
Increase due to revenue recognized during the period but contingent on future performance		1,442	1,417	6,619	4,748
Decrease due to transfer to receivables during the period		(700)		(8,312)	(7,466)
Write-off of deferred revenue due to application of fresh start accounting		60,945
Adjustments	[1]			11,828	(699)
Net balance at end of period		418	(46,458)	(11,859)	(54,057)
Contract assets at end of period		$ 418	1,835	141	2,870
Contract liabilities at end of period			$ (48,293)	$ (12,000)	$ (56,927)

[1] Upon commencement of drilling operations, the MMSA for the managed rigs was suspended and replaced by a charter agreement for the duration of the contract. As a result, we reclassified $11.1 million previously recorded as a contract liability to “Contract advances,” which was reported as a component of “Accrued liabilities” in our Consolidated Balance Sheet at December 31, 2022.