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Note 2 - Investments in Bond Securities (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Debt Securities, Held-to-Maturity [Table Text Block] |
|  | December 31, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
|  | (in thousands) |
Amortized cost |  | $ | 2,687 |  |  | $ | 3,135 |
Unrealized gains |  |  | 5 |  |  |  | 4 |
Fair value |  | $ | 2,692 |  |  | $ | 3,139 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | December 31, 2024 |  |  | December 31, 2023 |
|  |  |  |  |  | (in thousands) |  |  |  |  |
|  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
One year or less |  | $ | 2,687 |  |  | $ | 2,692 |  |  | $ | 2,671 |  |  | $ | 2,671 |
Greater than one year through five years |  |  | - |  |  |  | - |  |  |  | 464 |  |  |  | 468 |
|  | $ | 2,687 |  |  | $ | 2,692 |  |  | $ | 3,135 |  |  | $ | 3,139 |

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