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Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Statement of Comprehensive Income [Abstract]    
Net loss $ (7,247) $ (7,260)
Other comprehensive (loss) /(income):    
Net unrealized (loss) / income on available for sale securities [1]
Comprehensive loss $ (7,247) $ (7,260)
[1] Represents amount less than 1 thousand.