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Loss Per Share (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Loss Per Share Details Abstract      
Weighted number of shares of basic and diluted loss per share 85,909,859 38,902,214 32,525,138
Loss of basic and diluted loss per share $ 9,587 $ 6,571 $ 6,339