Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 31,617	$ 36,045	$ 45,455
State and local	5,928	3,848	7,087
Foreign	8,862	7,234	6,166
Total current provision	46,407	47,127	58,708
Deferred:
Federal	(1,416)	6,171	5,884
State and local	(272)	661	1,141
Foreign	515	(280)	(303)
Total deferred provision	(1,173)	6,552	6,722
Provision for income taxes	$ 45,234	$ 53,679	$ 65,430