Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net loss - Basic	$ (3,971)	$ (2,375)
Dilutive shares related to warrants	0	0
Net loss - Dilutive	$ (3,971)	$ (2,375)
Weighted Average Number of Shares Outstanding, Basic	15,656,784	3,673,340
Dilutive shares related to warrants	0	0
Weighted Average Number of Shares Outstanding, Diluted	15,656,784	3,673,340
Earnings Per Share, Basic, Total	$ (0.25)	$ (0.65)
Earnings Per Share, Diluted, Total	$ (0.25)	$ (0.65)