Note 11 - Debt (Details Textual) $ in Thousands			12 Months Ended
	Nov. 16, 2023 USD ($)	Jan. 28, 2016 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Nov. 15, 2023 USD ($)
Capital and Financing Lease Obligations Number of Leases			25	24
Interest Expense, Debt, Excluding Amortization			$ 3,300	$ 4,500	$ 3,600
Interest Costs Capitalized			300	300	$ 300
Letter of Credit [Member]
Letters of Credit Outstanding, Amount			2,400	2,200
The New Credit Facility [Member]
Line of Credit Facility, Dividend Restrictions, Maximum Amount		$ 15,000
Line of Credit Facility, Remaining Borrowing Capacity			70,100	72,800
The New Credit Facility [Member] | Federal Funds Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		0.50%
The New Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument, Basis Spread on Variable Rate		1.00%
The New Credit Facility [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 75,000		72,500			$ 50,000
Line of Credit Facility, Restricted Payment Capacity	2,500
Line of Credit Facility, Dividend Restrictions, Maximum Amount	15,000
Debt Instrument, Maximum Dividend Payment Permitted	25,000
Long-Term Line of Credit, Total			0	$ 0
The New Credit Facility [Member] | Standby Letters of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 5,000
Line of Credit Facility, Restricted Payment Capacity	2,500
The New Credit Facility [Member] | Term Loan [Member]
Debt Instrument, Face Amount	$ 35,000