Note 5 - Leases - Schedule of Supplemental Lease Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Mar. 31, 2024	Sep. 30, 2023
Operating Lease, Right-of-Use Asset	$ 1,176	$ 295
Current operating lease liability	289	279
Long-term operating lease liability	$ 864	$ 0
Weighted average remaining lease term (Year)	3 years 3 months 18 days
Weighted average discount rate	6.15%
Operating lease liabilities arising from obtaining right-of-use assets	$ 1,055