Income Taxes (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net change in the valuation allowance	$ 1,002	$ 1,476	$ 2,545
Income tax benefits for option and warrant exercises	$ 6,500
Net operating loss carry-forwards		47,100
Additional net operating loss carry-forwards		$ 22,100
Domestic Tax Authority [Member]
Operating loss carry forwards expiration dates description	Expire beginning in Fiscal 2020 through 2036.
State and Local Jurisdiction [Member]
Operating loss carry forwards expiration dates description	Expire beginning in Fiscal 2020 through 2036