Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Effective Income Tax Rate Reconciliation, Percent			3.10%	0.00%
Income Tax Expense (Benefit)	$ (5)	$ 8	$ (434)	$ 8
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			525
Unrecognized Tax Benefits	$ 0		$ 0		$ 0