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Taxes on Income (Details) - Income tax rate reconciliation
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Taxes on Income (Details) - Income tax rate reconciliation [Line Items]    
Statutory federal income tax benefit rate 21.00% 21.00%
State income taxes, net of federal benefit 2.50% 4.20%
Deemed dividend tax of deferred foreign income 0.50%
Foreign income taxed at different rates (3.60%) (1.10%)
Deferred tax asset valuation allowance 285.50% (22.60%)
Section 382 adjustment to deferred net operating loss (309.30%)
Other 0.90% (3.00%)
Effective income tax expense rate (3.00%) (1.00%)