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Note 8 - Stock Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2019
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 13,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares) |  | 0 |  | 0 |
Share Price (in dollars per share) |  | $ 9.62 |  |  |
Restricted Stock [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 83,000 |  |  |
The 2019 Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  |  | 1,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Pursuant to Exercise of Incentive Stock Options (in shares) |  |  |  |  | 1,000,000
The 2019 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Employee or Consultant [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  |  | 250,000
The 2019 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Non-employee Director [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  |  | 50,000
The 2019 Plan [Member] | Restricted Stock [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  | 1,585 | 2,649 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  | $ 249 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 2 years 10 months 24 days |  |  |
The 2019 Plan [Member] | Restricted Stock [Member] | Board of Directors [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  | 29,520 |  |  |
Stock Issued During Period, Value, Issued for Services |  | $ 312 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 27,935 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  | 3 months |  |  |
The 2019 Plan [Member] | Restricted Stock [Member] | Chief Executive Officer [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  | 55,894 |  |
Stock Issued During Period, Value, Issued for Services |  |  | $ 688 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  | 53,245 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  | 3 months |  |
The 2019 Plan [Member] | Restricted Stock [Member] | Key Employee [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  | 7,500 |  |
Stock Issued During Period, Value, Issued for Services |  |  | $ 101 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  | 4 years |  |
Share Purchase Match Program [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Matching Percentage of Common Stock Purchased | 20.00% |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Matching of Common Stock Purchased per Individual Within a Calendar Year | $ 25 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  | 1,585 | 9,956 |  |
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture |  | $ 18 | $ 144 |  |
Share Purchase Match Program [Member] | Restricted Stock [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  | 2,000 |  |  |
Stock Issued During Period, Value, Issued for Services |  | $ 24 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  | 3 months |  |  |
Share Purchase Match Program [Member] | Restricted Stock [Member] | Board of Directors [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  | 5,270 |  |
Stock Issued During Period, Value, Issued for Services |  |  | $ 80 |  |
Share Purchase Match Program [Member] | Restricted Stock [Member] | Key Employee [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  | 2,037 |  |
Stock Issued During Period, Value, Issued for Services |  |  | $ 29 |  |

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