Taxes on Income, Schedule of Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Company's provision for taxes on income varied from the statutory federal income tax rate [Abstract]
United States income tax statutory rate	21.00%	35.00%	35.00%
State and local taxes, net of federal benefit	6.50%	0.90%	1.80%
Change due to U.S. tax reform	0.00%	(369.00%)	0.00%
Other - net	3.20%	3.20%	0.50%
Effective income tax rate	30.70%	(329.90%)	37.30%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.

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