Note 5 - Inventories (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Sep. 30, 2025 |
|
| Inventory Write-down | $ 600 | $ 200 | $ 2,335 | $ 1,100 | |
| Inventory, Raw Materials, Gross | 29,683 | 29,683 | $ 27,245 | ||
| Semi-finished Goods and Component Parts [Member] | |||||
| Inventory, Raw Materials, Gross | $ 9,300 | $ 9,300 | $ 9,100 | ||