Note 5 - Inventory (Details Textual) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Inventory Consumed for Research and Development Activities | $ 900,000 | $ 100,000 | $ 2,000,000 | $ 900,000 |
| Inventory Write-down | $ 8,900,000 | $ 0 | $ 9,724,757 | $ 0 |