Net Loss Per Share - Schedule of Computation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net Loss		$ (2,011)	$ (2,086)	$ (5,027)	$ (6,939)
Beneficial conversion feature of series C preferred shares					(633)
Adjustments due to extinguishment and accretion of series D and series C preferred shares				(407)
Net loss available to common shareholders		$ (2,011)	$ (2,086)	$ (5,434)	$ (7,572)
Weighted average of Common Stock and pre-funded warrants outstanding during the period	[1]	40,764,158	317,896	16,729,052	248,907
Basic and diluted loss per share (dollars)		$ (0.05)	$ (6.56)	$ (0.32)	$ (30.42)

[1] For the purpose of calculating basic net loss per share, the additional shares of common stock that are issuuaable upon exercise of the Pre-funded Warrants have been included since the shares are issuable for a negligible consideration, as determined by the Company according to ASC 260-10-45-13, and have no vesting or other contingencies associated with them. 3,316,666 pre-funded warrants are included in the three and nine month calculation.