Long-term Debt - Net Carrying Amount of Liability Component of Convertible Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
2025 Notes [Member]
Debt Instrument [Line Items]
Principal, accrued non-cash interest and fees	$ 38,038	$ 189,750
Unamortized issuance cost	(326)	(2,883)
Net carrying amount	37,712	$ 186,867
Debt Liability Component Braidwell Term Loans [Member]
Debt Instrument [Line Items]
Principal, accrued non-cash interest and fees	207,801
Unamortized issuance cost	(34,042)
Net carrying amount	$ 173,759