General Information - Additional Information (Detail) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 23, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($) Rig	Dec. 31, 2022 USD ($)
Significant Accounting Policies [Line Items]
Number of offshore rigs owned | Rig			13
Survey Costs			$ 3,500	$ 3,300
Net book value of assets		$ 1,175,895	1,156,368	1,141,908
Gain on disposition of assets	$ 5,486	$ 1,024	$ 4,382	4,895
Period considered to treat short-term, highly liquidity investments as cash equivalents			three months or less
Amount capitalized for asset replacements and betterments			$ 124,300	69,100
Minimum [Member]
Significant Accounting Policies [Line Items]
Deferral and amortization costs incurred period			2 years 6 months
Estimated useful life for drilling rigs and equipment			3 years
Maximum [Member]
Significant Accounting Policies [Line Items]
Deferral and amortization costs incurred period			5 years
Estimated useful life for drilling rigs and equipment			30 years
Contract Drilling [Member]
Significant Accounting Policies [Line Items]
Amortized deferred survey costs			$ 1,100	700
Prepaid Expenses and Other Current Assets [Member]
Significant Accounting Policies [Line Items]
Survey Costs			1,400	800
Other Assets [Member]
Significant Accounting Policies [Line Items]
Survey Costs			$ 4,300	$ 2,500
Ultra-deepwater Drillship [Member]
Significant Accounting Policies [Line Items]
Number of offshore rigs owned | Rig			4
Semisubmersible Rigs [Member]
Significant Accounting Policies [Line Items]
Number of offshore rigs owned | Rig			7
Ocean Monarch [Member]
Significant Accounting Policies [Line Items]
Net book value of assets			$ 1,000
Managed rigs [Member]
Significant Accounting Policies [Line Items]
Number of offshore rigs owned | Rig			2