Net Loss Per Share - Schedule of Computation of Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net Loss	$ (7,240)	$ (8,438)
Beneficial conversion feature of series C preferred shares		(633)
Extinguishment and accretion of preferred shares	(456)	(3,957)
Adjusted loss	$ (7,696)	$ (13,028)
Weighted average of Common Stock and pre-funded warrants outstanding during the period	23,076,944	372,460
Basic and diluted loss per share (dollars)	$ (0.33)	$ (34.98)
Series D And C Preferred Stock [Member]
Extinguishment and accretion of preferred shares	$ (456)
Series B Preferred Stock [Member]
Net Loss
Extinguishment and accretion of preferred shares		$ (3,957)
Weighted average of Common Stock and pre-funded warrants outstanding during the period	1,081,581	23,481