Income Taxes - Schedule of Effective Income Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Computed “expected” tax provision (benefit)	$ 14,700	$ 15,500	$ (100)
Change in income tax resulting from:
State taxes, net of federal benefit	2,500	2,100	(8,400)
Foreign taxes		100	200
Change in valuation allowance			(126,000)
Other	(800)	700	200
Total provision (benefit) for taxes	$ 16,414	$ 18,444	$ (134,137)