Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Oct. 01, 2022	Oct. 02, 2021
Depreciation		$ 12,500,000	$ 13,700,000	$ 13,600,000
Interest Costs Capitalized		0	0	0
Asset Impairment Charges		$ 0	$ 0	$ 1,415,000
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Asset, Useful Life		5 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		15 years
Building [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		10 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		30 years
Land Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		10 years
Land Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		20 years
Forecast [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 842,000
Defined Benefit Plan, Expected Future Benefit Payment	611,000
Defined Benefit Plan, Increase in Expected Net Periodic Benefit Cost (Credit), Next Twelve Months	$ 3,000
Decrease in Assumed Discount Rate [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		0.25%
Defined Benefit Plan, Increase of Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Plan Assets		$ 271,000
Defined Benefit Plan, Increase in Accumulated Benefit Obligation		$ 224,000