Note 7 - Property, Plant and Equipment (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Sep. 30, 2024 a
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 4,616	$ 0	$ 4,616	$ 0
Depreciation	900	$ 900	$ 2,700	$ 2,600
Property Utilized for Parking [Member]
Area of Land (Acre) | a					17.3
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$ 4,600