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Taxes on Income - Schedule of Statutory Corporate Tax Rate and Effective Income Tax Rate (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]          
Net loss as reported in the statements of operations $ 1,893 $ 3,508 $ 3,362 $ 4,815 $ 7,589
Statutory tax rate     23.00% 24.00%  
Income tax under statutory tax rate     $ 773 $ 1,156  
Change in valuation allowance     (773) (1,156)  
Actual income tax