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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 | 9 Months Ended
--- | --- | ---
Jun. 24, 2023 | Jun. 25, 2022 | Jun. 24, 2023 | Jun. 25, 2022
Employee share-based compensation | $ 1,078 | $ 1,018 | $ 3,325 | $ 2,935
The above compensation is net of tax benefits | 305 | 116 | 610 | 549
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Employee share-based compensation | 449 | 693 | 1,628 | 2,115
Stock Purchase Plan [Member] |  |  |  |
Employee share-based compensation | 118 | 90 | 542 | 240
Stock Issued to Outside Directors [Member] |  |  |  |
Employee share-based compensation | 39 | 0 | 66 | 0
Restricted Stock Units (RSUs) [Member] |  |  |  |
Employee share-based compensation | 295 | 152 | 669 | 376
Performance Shares [Member] |  |  |  |
Employee share-based compensation | $ 177 | $ 83 | $ 420 | $ 204

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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 + Details
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