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Note 3 - Investments (Tables) | 12 Months Ended
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Sep. 30, 2024
Notes Tables |
Investment Holdings, Schedule of Investments [Table Text Block] |
|  | Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Total |
|  | (In thousands) |
2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual fund investments |  | $ | 10 |  |  | $ | 1 |  |  | $ | - |  |  | $ | 11 |
Total |  |  | 10 |  |  |  | 1 |  |  |  | - |  |  |  | 11 |
2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual fund investments |  | $ | 9 |  |  | $ | 1 |  |  | $ | - |  |  | $ | 10 |
Total |  |  | 9 |  |  |  | 1 |  |  |  | - |  |  |  | 10 |

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