Note 7 - Goodwill (Details Textual) - USD ($)	9 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Sep. 30, 2024
Goodwill	$ 6,878,932		$ 6,878,932
Goodwill, Period Increase (Decrease)	$ 0	$ 0

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details