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Note 13 - Income Taxes - Reconciliation of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Income taxes computed at the federal statutory rate	$ (3,314)	$ 239
Change in valuation allowance	1,065	435
Nondeductible compensation, interest expense and other	4,101	57
State income taxes, net of federal tax benefit	(859)	210
Change in R&D credit carryover	(186)	19
Stock options and other prior year true-ups	25	(175)
Foreign rate differential	(1)	(117)
State business credit utilization	(90)	(234)
Provision (benefit) for income taxes	$ 741	$ 434

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The amount of change in research and development carryover during the period.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state business credit utilization.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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