Long-Term Debt - Schedule of Revolving Credit Facility and Long-Term Debt (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
6.25% Senior Secured Notes Due 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, effective Interest Rate	6.25%	6.25%
8.75% Secured Financing Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, effective Interest Rate	8.75%	8.75%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt issuance costs	$ 0.8	$ 0.5