Convertible Senior Notes - Schedule of Net Carrying Amount of Liability Component (Detail) - 0.375%Convertible Senior Notes Due 2025 as Liability Component [Member] - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal	$ 459,083	$ 459,999
Unamortized debt discount		(70,594)
Unamortized issuance costs	(5,851)	(5,544)
Net carrying amount	$ 453,232	$ 383,861

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant