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Taxes on Income - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax [Line Items]      
Corporate tax rate   24.00% 25.00%
Corporate tax rate including temporary provision   24.00%  
Net carry forward tax losses   $ 24.8  
Federal tax net operating losses carry forward   0.4  
State tax net operating losses carry forward   $ 0.7  
Federal and state net operating losses expiration year   2036  
Scenario Forecast      
Income Tax [Line Items]      
Corporate tax rate including temporary provision 23.00%