Debt - Additional Information (Details) - USD ($)	Feb. 05, 2021	Jun. 30, 2022
Credit facility | Letters of credit
Debt Instrument [Line Items]
Debtor-in-possession financing, letters of credit outstanding		$ 11,900,000
Credit facility | Unsecured Debt
Debt Instrument [Line Items]
Debtor-in-possession financing, letters of credit outstanding		7,400,000
Exit Credit Agreement | Credit facility | Line of Credit
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged	$ 675,000,000
Debtor-in-possession financing, borrowings outstanding	$ 177,500,000	$ 0
Debtor-in-possession financing, increase of basis spread on variable rate	5000.00%
Debtor-in-possession financing, basis spread on variable rate, additional increase under conditions	5000.00%
Debt restrictive covenants, maximum available cash after borrowings	$ 100,000,000
Debt covenant, consolidated leverage ratio (maximum)	5.50
Debt restrictive covenants, outstanding borrowing	$ 610,000,000
Debt restrictive covenants, asset coverage ratio	2.00
Debt mandatory prepayments term, available cash benchmark	$ 150,000,000
Debt financial maintenance covenant, ratio of asset coverage aggregate rig value to aggregate principal amount of loans and letters of credit outstanding	2.00
Exit Credit Agreement | Credit facility | Line of Credit | Debt Covenant Period One
Debt Instrument [Line Items]
Debt financial maintenance covenant, ratio of adjusted EBITDA to cash interest expense	2.00
Exit Credit Agreement | Credit facility | Line of Credit | Debt Covenant Period Two
Debt Instrument [Line Items]
Debt financial maintenance covenant, ratio of adjusted EBITDA to cash interest expense	2.25
Exit Credit Agreement | Credit facility | Line of Credit | Fed Funds Effective Rate
Debt Instrument [Line Items]
Debtor-in-possession financing, increase of basis spread on variable rate	0.50%
Exit Credit Agreement | Credit facility | Line of Credit | LIBOR
Debt Instrument [Line Items]
Debtor-in-possession financing, increase of basis spread on variable rate	4.75%
Exit Credit Agreement | Credit facility | Line of Credit | Base Rate
Debt Instrument [Line Items]
Debtor-in-possession financing, basis spread on variable rate	3.75%
Exit Credit Agreement | Credit facility | Line of Credit | LIBOR
Debt Instrument [Line Items]
Debtor-in-possession financing, increase of basis spread on variable rate	1.00%
Exit Credit Agreement | Credit facility | Letters of credit
Debt Instrument [Line Items]
Debtor-in-possession financing, letters of credit outstanding	$ 8,800,000
Exit Credit Agreement | Letters of credit | Line of Credit
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged	$ 67,500,000
Second Lien Notes Indenture | Interest Payable In Cash
Debt Instrument [Line Items]
Debtor-in-possession financing, Interest rate on borrowings	11.00%
Second Lien Notes Indenture | Interest Payable Half In Cash And Half By Issuing P I K Notes
Debt Instrument [Line Items]
Debtor-in-possession financing, Interest rate on borrowings	13.00%
Second Lien Notes Indenture | Interest Payable By Issuing P I K Notes
Debt Instrument [Line Items]
Debtor-in-possession financing, Interest rate on borrowings	15.00%
Second Lien Notes Indenture | Participants In The Rights Offering | Ordinary Shares
Debt Instrument [Line Items]
Plan of reorganization, shares issued, subscription price	$ 200,000,000
Second Lien Notes Indenture | Secured notes
Debt Instrument [Line Items]
Debtor-in-possession financing, amount arranged	216,000,000
Debtor-in-possession financing, backstop fee	$ 16,000,000
Debt redemption price, percentage of principal amount redeemed	106.00%
Debt redemption, change of control period	120 days