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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 | 6 Months Ended
--- | --- | ---
Mar. 25, 2023 | Mar. 26, 2022 | Mar. 25, 2023 | Mar. 26, 2022
Employee share-based compensation | $ 1,147 | $ 921 | $ 2,247 | $ 1,917
The above compensation is net of tax benefits | 166 | 346 | 305 | 433
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Employee share-based compensation | 559 | 586 | 1,179 | 1,400
Stock Purchase Plan [Member] |  |  |  |
Employee share-based compensation | 197 | 90 | 424 | 150
Stock Issued to Outside Directors [Member] |  |  |  |
Employee share-based compensation | 27 | 11 | 27 | 22
Restricted Stock Units (RSUs) [Member] |  |  |  |
Employee share-based compensation | 193 | 152 | 374 | 224
Performance Shares [Member] |  |  |  |
Employee share-based compensation | $ 171 | $ 82 | $ 243 | $ 121

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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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