Note 15 - Income Taxes - Computation of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Current
Federal	$ 63	$ (12)
Foreign	244	202
State	59	0
Current Income Tax Expense (Benefit)	366	190
Deferred:
Federal	0	0
Foreign	(3)	(17)
Deferred Income Tax Expense (Benefit)	(3)	(17)
Income Tax Expense (Benefit)	$ 363	$ 173