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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, 2023	Dec. 31, 2022	Dec. 31, 2021
Theoretical tax benefit on the above amount Decrease (increase) in tax refund resulting from:
Loss before income taxes	$ (24,221)	$ (28,180)	$ (12,478)
Statutory tax rate	23.00%	23.00%	23.00%
Theoretical tax benefit	$ (5,571)	$ (6,481)	$ (2,870)
Change in temporary differences for which deferred taxes were not recognized	(1,177)	(1,696)	(1,332)
Tax rate differential	10	20	(101)
Non-deductible expenses	346	744	239
Losses and other items for which a valuation allowance was provided or benefit from loss carryforwards	6,392	6,879	4,064
Actual income tax expense	$ 0	$ (534)	$ 0

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

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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Amount 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 foreign income tax expense (benefit).

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