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Note 11 - Goodwill and Intangibles (Details Textual) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Sep. 30, 2024 USD ($)
Goodwill, Impairment Loss |  |  | $ 0
Number of Patents Granted | 62 |  |
Impairment of Intangible Assets (Excluding Goodwill), Total |  |  | $ 0
Amortization of Intangible Assets | $ 1,742,000 | $ 1,089,000 |
Patents [Member] |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  | 20 years

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