Derivative Liability (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Liability [Abstract]
Derivative liability fair value, beginning balance	$ 1,866	$ 895
Loss/Gain on derivative liability	(1,521)	971	$ (731)
Derivative liability fair value, ending balance	$ 345	$ 1,866	$ 895