Income Tax - Schedule of Activity Related to Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Balance as of beginning of year	$ 21,707	$ 21,302	$ 19,643
Increase (decrease) related to prior year tax positions	(9)	3
Increase related to current year tax positions	534	402	1,659
Balance as of end of year	$ 22,232	$ 21,707	$ 21,302