Note 11 - Long-term Debt (Details Textual) - USD ($) $ in Thousands	Jul. 26, 2023	Sep. 30, 2023	Sep. 30, 2022
Long-Term Debt, Total		$ 0	$ 0
Line of Credit [Member] | Woodforest National Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000
Line of Credit Facility, Borrowing Base as Percent of Certain Accounts Receivable	80.00%
Line of Credit Facility, Borrowing Base As Percent of Eligible Foreign Insured Accounts	90.00%
Line of Credit Facility, Borrowing Base as Percent of Eligible Inventory	25.00%
Line of Credit Facility, Borrowing Base as Percent of Forced Liquidation Value of Certain Inventory	50.00%
Debt Instrument, Covenant, Minimum Consolidated Tangible Net Worth	$ 100,000
Debt Instrument, Covenant, Minimum Liquidity	$ 5,000
Line of Credit Facility, Current Borrowing Capacity		13,100
Debt Issuance Costs, Gross		400
Line of Credit [Member] | Woodforest National Bank [Member] | Minimum [Member]
Current Ratio	2
Interest Coverage Ratio	1.5
Line of Credit [Member] | Woodforest National Bank [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	3.25%
Letter of Credit [Member] | Woodforest National Bank [Member]
Long-Term Line of Credit		$ 100