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Note 9 - Stock Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2019
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  | 13,000 | 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) |  |  | $ 14.16 |  |  |
Restricted Stock [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  | 125,000 | 126,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  | 106,000 | 155,000 | 202,000 |
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 Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  | $ 746 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  | 3 years 8 months 12 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) |  |  | 60,731 | 12,498 |  |
Stock Issued During Period, Value, Issued for Services |  |  | $ 758 | $ 231 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  |  | 10,413 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  |  | 3 months |  |
The 2019 Plan [Member] | Restricted Stock [Member] | Board of Directors [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  | 57,277 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  | 3 months |  |  |
The 2019 Plan [Member] | Restricted Stock [Member] | Board of Directors [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  | 2 years |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) |  |  | 3,454 |  |  |
The 2019 Plan [Member] | Restricted Stock [Member] | Certain Key Employees [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  | 7,500,000 | 65,431 |  |
Stock Issued During Period, Value, Issued for Services |  |  | $ 101 | $ 1,300 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  |  |  | 55,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  | 4 years | 4 years |  |
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) |  |  |  | 9,272 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month) |  |  |  | 3 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) |  |  | 10,761 | 9,375 |  |
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture |  |  | $ 155 | $ 158 |  |
Share Purchase Match Program [Member] | Restricted Stock [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  |  | 2,085 |  |
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 |  | 6,131 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period, Value |  | $ 80 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Match on Open Market Purchases, Percentage |  |  | 20.00% |  |  |
Share Purchase Match Program [Member] | Restricted Stock [Member] | Certain Key Employees [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  | 2,037 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period, Value |  |  | $ 29 |  |  |
Share Purchase Match Program [Member] | Restricted Stock [Member] | Chief Executive Officer [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) |  |  |  | 1,159 |  |

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