Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current provision (benefit) :
Federal	$ 274	$ 17	$ 1,191
State	472	522	947
Total current	746	539	2,138
Deferred provision (benefit):
Federal	6,585	(1,284)	(783)
State	(588)	(285)	(439)
Total deferred	5,997	(1,569)	(1,222)
Provision (benefit) for income taxes of continuing operations	$ 6,743	$ (1,030)	$ 916