Debt - Schedule of Interest Expense Recognized Related to Convertible Notes (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Amortization of debt issuance costs and discount			$ 829	$ 5,631
Convertible Senior Notes Due in 2024 and 2027 [Member]
Debt Instrument [Line Items]
Contractual interest expense	$ 194	$ 144	338	288
Amortization of debt issuance costs and discount	406	2,831	818	5,625
Total	$ 600	$ 2,975	$ 1,156	$ 5,913

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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