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Note 7 - Stock-based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2024
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Stock Options |  |  | Grant Date Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (in Years) |  |  | Intrinsic Value |
Outstanding at January 1, 2024 |  |  | 146,000 |  |  | $ | 2.83 |  |  |  | 5.44 |  |  | $ | - |
Forfeited |  |  | (84,000 | ) |  | $ | 2.87 |  |  |  | - |  |  | $ | - |
Outstanding at September 30, 2024 |  |  | 62,000 |  |  | $ | 2.76 |  |  |  | 2.56 |  |  | $ | 20,000 |
Exercisable at September 30, 2024 |  |  | 35,000 |  |  | $ | 2.76 |  |  |  | 1.32 |  |  | $ | - |
Outstanding at January 1, 2023 |  |  | 95,000 |  |  | $ | 2.76 |  |  |  | 4.83 |  |  | $ | 25,000 |
Granted |  |  | 70,000 |  |  | $ | 2.82 |  |  |  | 7.00 |  |  | $ | - |
Forfeited |  |  | (19,000 | ) |  | $ | 2.69 |  |  |  | - |  |  | $ | - |
Outstanding at September 30, 2023 |  |  | 146,000 |  |  | $ | 2.80 |  |  |  | 5.51 |  |  | $ | - |
Exercisable at September 30, 2023 |  |  | 38,000 |  |  | $ | 2.86 |  |  |  | 3.35 |  |  | $ | - |

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