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 income tax (benefit) provision
Federal	$ (72)	$ (78)	$ (70)
State	442	494	937
Foreign	23	36	5
Total current income tax provision	393	452	872
Deferred income tax provision (benefit):
Federal	5,169	25,210	30,414
State	3,768	(1,964)	(2,414)
Total deferred income tax provision	8,937	23,246	28,000
Total income tax provision	$ 9,330	$ 23,698	$ 28,872