Income Taxes - Schedule of Changes in Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Beginning balance	[1]	$ 66,875	$ 53,213	$ 4,330
Increases related to prior year tax positions	[1]	13,075	5,378
Decreases related to prior year tax positions	[1]			(20)
Increases related to current year tax positions	[1]	6,381	9,206	49,100
Settlements	[1]		(520)	(197)
Expiration of statute of limitations	[1]		(402)
Ending balance	[1]	$ 86,331	$ 66,875	$ 53,213

[1] Includes the impact of a statutory rate change in the U.K