Note 15 - Income Taxes (Tables)

12 Months Ended

Sep. 30, 2023

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	YEAR ENDED SEPTEMBER 30,
	2023		2022
United States	$	11,190	$	(19,425	)
Foreign		1,379		(3,258	)
	$	12,569	$	(22,683	)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	YEAR ENDED SEPTEMBER 30,
	2023			2022
Current
Federal	$	63		$	(12	)
Foreign		244			202
State		59			—
		366			190
Deferred:
Federal		—			—
Foreign		(3	)		(17	)
		(3	)		(17	)
	$	363		$	173

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	YEAR ENDED SEPTEMBER 30, 2023						YEAR ENDED SEPTEMBER 30, 2022
	Amount			Percent			Amount			Percent
Expense (benefit) for U.S. federal income tax at statutory rate	$	2,639			21.0	%	$	(4,763	)		21.0	%
Research and experimentation tax credit		(480	)		(3.9	)%		6			(0.1	)%
State income taxes, net of federal income tax benefit		302			2.5	%		(265	)		1.2	%
Nondeductible goodwill		—			—			911			(4.0	)%
Change in valuation allowance		(2,459	)		(19.6	)%		3,768			(16.6	)%
Change in fair value of contingent consideration		—			—			(278	)		1.2	%
Disallowed stock compensation		171			1.4	%		217			(1.0	)%
Impact due to foreign currency translation		51			0.4	%		460			(2.0	)%
Other items		139			1.1	%		117			(0.5	)%
Total tax expense and effective tax rate	$	363			2.9	%	$	173			(0.8	)%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	YEAR ENDED SEPTEMBER 30,
	2023			2022
Deferred income tax assets:
Inventories	$	8,269		$	8,513
Loss and tax credit carry-forwards		29,581			34,643
Accrued compensation		870			609
R&D expenditure capitalization		1,538			—
Property and equipment		504			578
Other reserves		590			359
Subtotal deferred income tax assets		41,352			44,702
Valuation allowance		(38,917	)		(41,376	)
Net deferred income tax assets		2,435			3,326
Deferred income tax liabilities:
Intangible assets		(292	)		(356	)
Property and equipment		(2,153	)		(2,874	)
Other		(6	)		(109	)
Total deferred income tax liabilities		(2,451	)		(3,339	)
Net deferred income tax liabilities	$	(16	)	$	(13	)