Note 3 - Intangible Assets (Details Textual) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Amortization of Intangible Assets		$ 30	$ 30	$ 80	$ 80
The Constructs [Member]
License Agreement, Term	25 years
License Agreement, Renewal Period	5 years
Finite-Lived Intangible Asset, Useful Life	25 years
Upfront License Payment	$ 2,500