Schedule of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Line Items]
Beginning balance, as of January 1	$ 17,903	$ 21,180	$ 43,395
Tax positions for current year, Additions	1,417	1,082	1,322
Tax positions for prior years, Additions	30	66	8,043
Tax positions for prior years, Reductions	(1,639)	(2,989)	(31,397)
Expiration of statutes, Reductions	(3,246)	(1,436)	(183)
Ending balance as of December 31	$ 14,465	$ 17,903	$ 21,180