Schedule of Components of Income Tax Expenses (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal		$ 247
Current income tax expense		247
Deferred:
Federal	$ (4,091)	(8,939)
State	(234)	(1,277)
Deferred income tax benefit	(4,325)	(10,216)
Income tax benefit	$ (4,325)	$ (9,969)