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Income Taxes (Schedule Of Net Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Income Taxes [Abstract] |  |
Vacation Accrual | $ 27 | $ 29
Allowance for Doubtful Accounts | 2 | 2
Stock Compensation | 96 | 94
Bonus | 4 | 0
Depreciation and Amortization | 100 | 94
Inventory Obsolescence | 2 | 1
R&D Credit Carryforward | 220 | 235
Valuation allowance | (220) | (186)
Total Deferred Tax Assets | 231 | 269
Prepaid Expenses | 23 | 23
Total Deferred Tax Liabilities | 23 | 23
Net Deferred Tax Asset | $ 208 | $ 246

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