Taxes on Income (Details) - Income tax rate reconciliation	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Taxes on Income (Details) - Income tax rate reconciliation [Line Items]
Statutory federal income tax benefit Rate	21.00%	34.00%
State income taxes, net of federal Benefit	4.20%	0.10%
Deemed dividend tax of deferred foreign income under the TCJ Act	0.50%	(14.30%)
AMT credit fully refundable under the TCJ Act		21.60%
Foreign income taxed at different Rates	(1.10%)	(1.90%)
Deferred tax asset remeasured under the TCJ Act		(48.60%)
Deferred tax asset valuation Allowance	(22.60%)	30.60%
Other	(3.00%)	(0.60%)
Effective income tax (expense) benefit rate	(1.00%)	20.90%