Income Taxes - Schedule of Gross Unrecognized Tax Benefits (Excluding Interest and Penalties) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Beginning Balance	$ 4,629	$ 16,904
Additions for current year tax positions	45	568
Increases for prior year tax positions	110	84
Settlements of prior year tax positions		(29)
Expiration of statutes	(1,322)	(12,898)
Ending Balance	$ 3,462	$ 4,629