Note 13 - Other Financial Data - Balance Sheet Information (Details) - USD ($) $ in Thousands	Apr. 02, 2022	Oct. 02, 2021
Accounts receivable	$ 81,090	$ 68,274
Less allowance for doubtful accounts	(400)	(357)
Total	80,690	67,917
Raw materials	80,435	50,459
Work in process	9,224	6,680
Finished goods	37,390	21,910
Total	127,049	79,049
Prepaid insurance	3,706	5,169
Other	1,634	4,887
Total	5,340	10,056
Cash surrender value of life insurance policies	11,267	12,501
Assets held for sale	0	6,306
Other assets	2,135	1,717
Capitalized financing costs, net	73	106
Other	119	137
Total	13,594	20,767
Land and land improvements	14,577	14,554
Buildings	53,362	53,182
Machinery and equipment	190,248	180,654
Construction in progress	8,572	10,191
Property, plant and equipment, gross	266,759	258,581
Less accumulated depreciation	(159,600)	(152,957)
Total	107,159	105,624
Salaries, wages and related expenses	7,731	8,229
Income taxes	2,961	4,014
Customer rebates	1,552	2,354
Operating lease liability	1,191	1,030
Property taxes	598	1,575
State sales and use taxes	430	760
Sales allowance reserves	351	991
Other	543	453
Total	15,357	19,406
Deferred compensation	13,235	12,832
Deferred Tax Liabilities, Net, Total	7,412	6,296
Operating lease liability	948	695
Total	$ 21,595	$ 19,823