Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 0	$ 0	$ 0
State	819	485	327
Total current	819	485	327
Deferred
Federal	8,412	(23,308)	0
State	(60)	(2,030)	0
Total deferred	8,352	(25,338)	0
Total income tax provision (benefit)	$ 9,171	$ (24,853)	$ 327