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Note 6 - Share-based Compensation and Post-retirement Benefits - Summary of Share-based Compensation Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 24, 2022	Dec. 25, 2021
Stock options	$ 1,100	$ 996
The above compensation is net of tax benefits	139	87
Share-Based Payment Arrangement, Option [Member]
Stock options	620	814
Stock Purchase Plan [Member]
Stock options	227	60
Stock Issued to Outside Directors [Member]
Stock options	0	11
Restricted Stock Units (RSUs) [Member]
Stock options	181	72
Performance Shares [Member]
Stock options	$ 72	$ 39

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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