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Note B - Revenue From Contracts With Customers (Details Textual) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jan. 31, 2024 | Dec. 31, 2025 | Dec. 31, 2024
Contract with Customer, Liability, Revenue Recognized | $ 508,000 | $ 455,000 |
Contract with Customer, Liability |  | $ 635,000 | $ 970,000
Minimum [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year) |  | 1 year |
Maximum [Member] |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year) |  | 5 years |
Product Concentration Risk [Member] | Subscription Orders [Member] | Revenue from Contract with Customer Benchmark [Member] |  |  |
Concentration Risk, Percentage |  | 18.00% |

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