Note 4 - Property and Equipment, Net - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Property and Equipment	$ 1,914	$ 2,592
Accumulated depreciation	(1,540)	(2,287)
Property and equipment, net	374	305
Equipment [Member]
Property and Equipment	324	786
Leasehold Improvements [Member]
Property and Equipment	154	154
Furniture and Fixtures [Member]
Property and Equipment	344	399
IT Infrastructure [Member]
Property and Equipment	87	87
Software Development [Member]
Property and Equipment	$ 1,005	$ 1,166