Note 12 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Sep. 30, 2023
Accounts receivable	$ 61,720	$ 63,735
Less allowance for credit losses	(486)	(311)
Total	61,234	63,424
Raw materials	41,203	39,341
Work in process	5,968	5,852
Finished goods	42,208	58,113
Total	89,379	103,306
Prepaid insurance	3,915	4,043
Income tax receivable	2,129	0
Other	2,722	2,410
Total	8,766	6,453
Cash surrender value of life insurance policies	$ 12,032	$ 10,586
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Right-of-use asset	$ 2,001	$ 1,939
Capitalized financing costs, net	137	175
Other	159	111
Total	14,329	12,811
Land and land improvements	15,318	15,107
Buildings	59,358	56,653
Machinery and equipment	226,423	198,528
Construction in progress	4,497	18,019
Property, Plant and Equipment, Gross	305,596	288,307
Less accumulated depreciation	(177,707)	(168,293)
Total	127,889	120,014
Salaries, wages and related expenses	3,589	5,082
Customer rebates	1,601	2,132
Sales allowance reserves	1,403	745
Property taxes	$ 1,371	$ 1,912
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total	Total
Operating lease liability	$ 968	$ 999
State sales and use taxes	342	268
Income taxes	0	187
Other	614	484
Total	9,888	11,809
Deferred compensation	11,685	11,374
Deferred Tax Liabilities, Net	$ 11,181	$ 7,543
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total	Total
Operating lease liability	$ 1,019	$ 936
Total	$ 23,885	$ 19,853