Income Taxes - Schedule of Provision (Benefit) for Income Taxes Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 1,206	$ 686
State	1,428	2,188	$ 1,078
Foreign	421	139	168
Total current tax expense	3,055	3,013	1,246
Deferred:
Federal	11,633	5,636
State	3,755	935	217
Foreign	218	(436)	(280)
Total deferred tax expense (benefit)	15,606	6,135	(63)
Provision for income taxes	$ 18,661	$ 9,148	$ 1,183