Income Taxes - Schedule of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 45,455	$ 38,357	$ 31,700
State and local	7,087	7,180	6,505
Foreign	6,166	4,346	1,456
Total current provision	58,708	49,883	39,661
Deferred:
Federal	5,884	1,492	3,583
State and local	1,141	299	530
Foreign	(303)	189	(44)
Total deferred provision	6,722	1,980	4,069
Provision for income taxes	$ 65,430	$ 51,863	$ 43,730