Note 17 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Oct. 02, 2021	Oct. 03, 2020
Accounts receivable	$ 68,274	$ 54,108
Less allowance for credit losses	(357)	(291)
Total	67,917	53,817
Raw materials	50,459	31,553
Work in process	6,680	3,813
Finished goods	21,910	33,597
Total	79,049	68,963
Prepaid insurance	5,169	4,096
Other	4,887	1,474
Total	10,056	5,570
Cash surrender value of life insurance policies	12,501	10,584
Disposal Group, Including Discontinued Operation, Assets, Total	6,306	7,778
Other assets	1,717	2,522
Capitalized financing costs, net	106	170
Other	137	106
Total	20,767	21,160
Land and land improvements	14,554	14,520
Buildings	53,182	52,462
Machinery and equipment	180,654	172,617
Construction in progress	10,191	3,978
Property, plant and equipment, gross	258,581	243,577
Less accumulated depreciation	(152,957)	(142,185)
Total	105,624	101,392
Salaries, wages and related expenses	8,229	4,971
Income taxes	4,014	1,201
Customer rebates	2,354	1,581
Property taxes	1,575	1,726
Sales allowance reserves	991	0
State sales and use taxes	760	544
Holdback for business acquired	0	1,000
Other	453	2,464
Total	19,406	14,717
Deferred compensation	12,832	11,553
Deferred Tax Liabilities, Net, Total	6,296	6,568
Total	19,823	19,421
Accrued Expenses, Current [Member]
Accrued expenses	1,030	1,230
Other Noncurrent Liabilities [Member]
Operating lease liabilities	$ 695	$ 1,300