Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Pre-tax loss as reported	$ (38,511)	$ (9,989)	$ (8,513)
U.S. statutory tax rate	21.00%	34.00%	34.00%
Theoretical tax expense	$ (8,087)	$ (3,396)	$ (2,895)
Increase in income tax expense resulting from:
Permanent differences	12	5	5
Change in tax rate		20,267
Other differences		4
Change in valuation allowance	8,075	(16,880)	2,890
Income tax expense