Note 10 - Long-term Debt (Details Textual) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2022	Mar. 31, 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	$ 10,000
Line of Credit Facility, Borrowing Base as Percent of Loan to Value of Property	70.00%
Line of Credit Facility, Borrowing Base as Percent of Forced Liquidation Value of Equipment	50.00%
Line of Credit Facility, Borrowing Base as Percent of Certain Accounts Receivable	80.00%
Line of Credit Facility, Borrowing Base as Percent of Forced Liquidation Value of Certain Inventory	50.00%
Line Of Credit Facility, Borrowing Base of Inventory, Percent of Credit Towards Accounts Receivable	100.00%
Line of Credit Facility, Expiration Period (Year)	2 years
Debt Instrument, Covenant, Minimum Consolidated Tangible Net Worth	$ 100,000
Line of Credit Facility, Current Borrowing Capacity		$ 5,500
Debt Issuance Costs, Gross	$ 200
Line of Credit [Member] | Woodforest National Bank [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%
Line of Credit [Member] | Woodforest National Bank [Member] | Prime Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	3.25%