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Income Taxes (Schedule of Reconciliation of Theoretical Income Tax Expense to Actual Income Tax Expense) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Theoretical tax benefit on the above amount Decrease (increase) in tax refund resulting from:    
Loss before income tax $ (12,478) $ (5,951)
Statutory tax rate 23.00% 23.00%
Theoretical tax benefit $ (2,870) $ (1,369)
Losses and other items for which a valuation allowance was provided or benefit from loss carryforwards 2,870 1,369
Actual income tax expense