Income Taxes, Components of Provision for Income Taxes from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Current [Abstract]
Federal	$ (79)	$ 0
State	13	3
Foreign	85	287
Total current	19	290
Deferred [Abstract]
Federal	0	0
State	0	0
Foreign	585	17
Total Deferred	585	17
Provision (benefit) for income taxes	$ 604	$ 307