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Taxes on Income (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Taxes on Income [Abstract]      
Total comprehensive loss $ (8,353) $ (15,488) $ (17,503)
Statutory tax rate 23.00% 23.00% 24.00%
Theoretical tax benefit $ (1,921) $ (3,562) $ (4,201)
Increase in tax liability due to:      
Non-deductible expenses 75 280 629
Losses and benefits for tax purposes for which no deferred taxes were recorded 1,846 3,282 3,572
Taxes on income