Note 8 - Employee Benefit Plans - Net Periodic Pension Costs and Related Components (Details) - Supplemental Employee Retirement Plan [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Interest cost	$ 147	$ 130	$ 442	$ 390
Service cost	63	83	189	249
Recognized net actuarial loss	0	3	0	9
Net periodic pension cost	$ 210	$ 216	$ 631	$ 648

Amount of cost recognized for passage of time related to defined benefit plan.

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-Topic 715
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_DefinedBenefitPlanInterestCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration