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Net Loss per Common Share (Basic and Diluted Net Loss Per Share) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Numerator:    
Net loss $ (7,830) $ (7,288)
Dividend on convertible exchangeable preferred shares (201) (201)
Adjusted Net loss applicable to common stockholders $ (8,031) $ (7,489)
Denominator:    
Weighted-average number of common shares used in loss per share – basic and diluted 16,321,746 12,094,131
Loss per share – basic and diluted $ (0.49) $ (0.62)