Supplemental Financial Information - Accrued Liabilities (Detail) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021	Apr. 23, 2021
Payables and Accruals [Abstract]
Contract advances		$ 52,743
Rig operating costs		39,288	$ 42,532
Payroll and benefits		29,408	29,268
Current operating lease liability		13,480	15,998
Deferred revenue	[1]	11,513	38,506
Accrued capital project/upgrade costs		8,419	2,219
Shorebase and administrative costs		4,365	5,776
Personal injury and other claims		3,738	5,598
Interest payable		1,897	2,986
Deposit for equipment sale		1,670
Other		264	853
Change in accrued liabilities		$ 166,785	$ 143,736	$ 123,055

[1] Contract assets and contract liabilities may reflect balances that have been netted together on a contract basis. Net current contract asset and liability balances are included in “Prepaid expenses and other current assets” and “Accrued liabilities,” respectively, and net noncurrent contract asset and liability balances are included in “Other assets” and “Other liabilities,” respectively, in our Consolidated Balance Sheets as of December 31, 2022 and 2021.