Income Taxes - Reconciliation of Federal Statutory Income Tax Rate to Effective Income Tax Rate from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Expected income tax benefit (expense) at U.S. statutory rate	$ 15,198	$ 94,801	$ 3,977
Difference between U.S. and foreign taxes	6	21	12
State tax (expense) benefit, net of federal taxes	983	4,828	(131)
Non-deductible stock-based compensation	(982)	(3,845)	(2,832)
Meals and entertainment	(135)	(129)	(266)
Goodwill impairment		(25,841)
Non-deductible officer compensation		(43)
Change in statutory state tax rate	(1,604)	(865)	(253)
Indirect federal impact of state deferred taxes			110
Valuation allowance	(13,509)	(53,463)	(3,648)
Other	(12)	(751)	175
Total income tax benefit (expense) from continuing operations	$ (55)	$ 14,713	$ (2,856)