Note 12 - Leases - Future Minimum Rental Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
2024 (remaining), operating leases	$ 118
2024 (remaining), subleases	60
2024 (remaining), net leases	58
2025, operating leases	192
2025, subleases	66
2025, net leases	126
2026, operating leases	0
2026, subleases	0
2026, net leases	0
2027, operating leases	0
2027, subleases	0
2027, net leases	0
2028, operating leases	0
2028, subleases	0
2028, net leases	0
Thereafter, operating leases	0
Thereafter, subleases	0
Thereafter, net leases	0
Total lease commitments, operating leases	310
Total lease commitments, subleases	126
Total lease commitments, net leases	184
Less: Amount representing interest	(16)
Present value of lease liabilities	294
Less: current portion	(172)	$ (148)
Operating lease liabilities, net of current portion	$ 122	$ 241