Income Taxes - Schedule of Income Before Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 88,016	$ 48,716	$ 39,534
Foreign	1,892	(1,438)	(1,056)
Total income before the provision for income taxes	$ 89,908	$ 47,278	$ 38,478