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Interim Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Statement of Comprehensive Income [Abstract]        
Net loss $ (1,542) $ (1,894) $ (3,503) $ (3,376)
Other comprehensive loss (income):        
Net unrealized loss (gain) on available for sale securities [1] [1]
Comprehensive loss $ (1,542) $ (1,894) $ (3,503) $ (3,376)
[1] Represents amount less than 1 thousand.