Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal	$ 30,215	$ 28,928	$ 31,617
State and local	19,130	7,686	5,928
Foreign	15,538	13,234	8,862
Total current provision	64,883	49,848	46,407
Deferred:
Federal	7,474	2,579	(1,416)
State and local	1,439	403	(272)
Foreign	1,186	(308)	515
Total deferred provision	10,099	2,674	(1,173)
Provision for income taxes	$ 74,982	$ 52,522	$ 45,234