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Note 15 - Stockholders' Equity (Tables) | 12 Months Ended
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Sep. 30, 2024
Notes Tables |
Share-Based Payment Arrangement, Activity [Table Text Block] |
|  | Number of Nonqualified Options Outstanding |  |  | Weighted Average Exercise Price per Share |  |  | Number of RSAs |  |  | Weighted Average Grant-date Fair Value per Share |  |  | Number of RSUs |  |  | Weighted Average Grant-date Fair Value per Unit |
Outstanding at October 1, 2022 |  |  | — |  |  | $ | — |  |  |  | 1,000 |  |  | $ | 14.59 |  |  |  | 323,859 |  |  | $ | 9.54 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 228,250 |  |  |  | 4.70 |
Forfeited |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (7,312 | ) |  |  | 8.44 |
Vested |  |  | — |  |  |  | — |  |  |  | (1,000 | ) |  |  | 14.59 |  |  |  | (167,248 | ) |  |  | 9.94 |
Outstanding at September 30, 2023 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 377,549 |  |  | $ | 6.46 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 233,200 |  |  |  | 12.26 |
Forfeited |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (26,253 | ) |  |  | 6.47 |
Vested |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (175,601 | ) |  |  | 7.08 |
Outstanding at September 30, 2024 |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |  |  |  | 408,895 |  |  | $ | 9.50 |

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