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Note 5 - Share-based Compensation and Post-retirement Benefits - Summary of Share-based Compensation Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 29, 2024	Jun. 24, 2023	Jun. 29, 2024	Jun. 24, 2023
Employee share-based compensation	$ 1,264	$ 1,078	$ 3,776	$ 3,325
The above compensation is net of tax benefits	369	305	1,065	610
Share-Based Payment Arrangement, Option [Member]
Employee share-based compensation	256	449	983	1,628
Stock Purchase Plan [Member]
Employee share-based compensation	131	118	369	542
Stock Issued to Outside Directors [Member]
Employee share-based compensation	32	39	106	66
Restricted Stock Units (RSUs) [Member]
Employee share-based compensation	468	295	1,294	669
Performance Shares [Member]
Employee share-based compensation	$ 377	$ 177	$ 1,024	$ 420

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- Definition

Amount, after tax, of expense for award under share-based payment arrangement.

+ References

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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