Income Taxes (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net change in the valuation allowance	$ (16,094)	$ 1,002	$ 1,476
Income tax benefits for option and warrant exercises	$ 6,500
Revised U.S. corporate tax rate	21.00%
Reduction in deferred tax asset revaluation	$ 1,800
Income tax payable	700
Domestic Tax Authority [Member]
Net operating loss carry-forwards	$ 12,200
Operating loss carry forwards expiration dates description	Expire beginning in Fiscal 2020 through 2036
State and Local Jurisdiction [Member]
Net operating loss carry-forwards	$ 13,800
Operating loss carry forwards expiration dates description	Expire beginning in Fiscal 2019 through 2037
Tax Cuts and Jobs Act [Member] | Minimum [Member]
U.S. corporate tax rate	15.00%
Tax Cuts and Jobs Act [Member] | Maximum [Member]
U.S. corporate tax rate	35.00%