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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Income Taxes [Abstract] |  |
Computed "Expected" Federal Tax Expense | $ 79 | $ 15
Increase (Decrease) in Taxes Resulting From: |  |
State Income Taxes, net of Federal Benefit | 1 | 1
R&D Credits | (63) | 0
Permanent Differences | 4 | 2
Other | 82 | (46)
Total Federal and State Income Taxes | $ 103 | $ (28)

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