Long-Term Obligations - Schedule of Interest Expense Recognized Related to Convertible Notes (Detail) - 3% Convertible Senior Notes Due 2025 [Member] - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Contractual interest expense	$ 1,294	$ 1,294
Amortization of debt issuance costs	198	191
Total	$ 1,492	$ 1,485

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration