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Taxes on Income - Schedule of Statutory Tax Rate and Effective Income Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]    
Net loss as reported in the statements of operations $ 7,589 $ 9,663
Statutory tax rate 24.00% 25.00%
Income Tax under statutory tax rate $ 1,821 $ 2,416
Change in valuation allowance (1,821) (2,416)
Actual income tax