Note 12 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Oct. 01, 2022
Accounts receivable	$ 66,688	$ 82,043
Less allowance for doubtful accounts	(325)	(397)
Total	66,363	81,646
Raw materials	51,344	108,894
Work in process	6,379	8,817
Finished goods	75,403	79,943
Total	133,126	197,654
Prepaid insurance	3,945	4,563
Other	2,461	3,153
Total	6,406	7,716
Cash surrender value of life insurance policies	10,835	9,938
Capitalized financing costs, net	188	41
Other	109	121
Total	12,936	11,665
Land and land improvements	15,107	14,947
Buildings	55,578	55,044
Machinery and equipment	187,346	191,790
Construction in progress	28,333	11,745
Property, Plant and Equipment, Gross	286,364	273,526
Less accumulated depreciation	(167,576)	(165,370)
Total	118,788	108,156
Salaries, wages and related expenses	5,174	8,128
Income taxes	2,154	0
Customer rebates	1,815	2,760
Property taxes	1,307	1,782
Sales allowance reserves	927	1,013
State sales and use taxes	269	595
Other	403	525
Total	12,984	15,800
Deferred compensation	12,294	11,747
Deferred Tax Liabilities, Net	6,095	7,086
Total	19,257	19,405
Other Noncurrent Assets [Member]
Right-of-use asset	1,804	1,565
Accrued Expenses, Current [Member]
Operating lease liability	935	997
Other Noncurrent Liabilities [Member]
Operating lease liability	$ 868	$ 572