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Long-Term Debt - Summary of Carrying Value of Long-term Debt, Net of Unamortized Discount, Premium and Debt Issuance Costs (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Apr. 23, 2021
Senior Notes [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 550.0	$ 550.0
First Lien Notes [Member]
Debt Instrument [Line Items]
Debt instrument face amount			$ 85.3
First Lien Notes [Member] \| Cash Pay Rate [Member]
Debt Instrument [Line Items]
Interest rate of senior notes	9.00%	9.00%	9.00%
First Lien Notes [Member] \| Cash Pay Rate and Payment in Kind Rate [Member]
Debt Instrument [Line Items]
Interest rate of senior notes	11.00%	11.00%	11.00%
First Lien Notes [Member] \| Payment in Kind Rate [Member]
Debt Instrument [Line Items]
Interest rate of senior notes	13.00%	13.00%	13.00%
Exit Term Loans [Member]
Debt Instrument [Line Items]
Debt instrument face amount	$ 100.0	$ 100.0