Income Taxes - Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 113	$ 1,529	$ (8,357)
State	5	126	(691)
Foreign	148	29	0
Current, total	266	1,684	(9,048)
Deferred:
Federal	114	495	36,183
State	26	7	(1,637)
Foreign	0	0	0
Deferred, total	140	502	34,546
Total income tax provision	$ 406	$ 2,186	$ 25,498