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Taxes on Income (Details) - Income tax rate reconciliation
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
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 3.90% 2.50%
Deemed dividend tax of deferred foreign income 0.90%
Foreign income taxed at different rates (0.20%) (3.60%)
Deferred tax asset valuation allowance (25.50%) 285.50%
Section 382 adjustment to deferred net operating loss (309.30%)
Other 0.90%
Effective income tax benefit (expense) rate 0.10% (3.00%)