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Note 10 - Stockholders' Equity | 6 Months Ended
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Jun. 30, 2025
Notes to Financial Statements |
Equity [Text Block] | 10. Stockholders' Equity Shares Outstanding The following table presents a rollforward of outstanding shares for the periods indicated:
|  | Six Months Ended June 30, 2025 |  | Year Ended December 31, 2024
|  | Common Stock Issued |  | Held in Treasury |  | Common Stock Outstanding |  | Common Stock Issued |  | Held in Treasury |  | Common Stock Outstanding
Shares, beginning of year |  |  | 5,454,639 |  |  |  | (81,584 | ) |  |  | 5,373,055 |  |  |  | 5,454,639 |  |  |  | (81,584 | ) |  |  | 5,373,055 |
Stock-based compensation |  |  | 16,156 |  |  |  | — |  |  |  | 16,156 |  |  |  | — |  |  |  | — |  |  |  | — |
Shares, end of period |  |  | 5,470,795 |  |  |  | (81,584 | ) |  |  | 5,389,211 |  |  |  | 5,454,639 |  |  |  | (81,584 | ) |  |  | 5,373,055 |

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