Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 0	$ 0	$ 0
State	0	0	0
Total current taxes	0	0	0
Deferred
Federal	3,967	3,714	21,276
State	4,457	537	14,628
Total deferred taxes	8,424	4,251	35,904
Decrease in valuation allowance	(1,300)	(146,743)	(34,578)
Total income tax (benefit) expense	$ 7,124	$ (142,492)	$ 1,326