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Taxes on Income (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Income Tax Disclosure [Abstract]        
Effective income tax expense (benefit) rate 29.50% 22.80% 26.30% 83.40%
Change in valuation allowance       $ 1.9
Benefit to effective tax rate from change in valuation allowance       (42.00%)