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Note 5 - Summary of Share-based Compensation Expense (Benefit) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 26, 2022 | Mar. 27, 2021 | Mar. 26, 2022 | Mar. 27, 2021
Employee share-based compensation | $ 921 | $ 580 | $ 1,917 | $ 1,404
The above compensation is net of tax benefits | 346 | 446 | 433 | 866
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Employee share-based compensation | 586 | 447 | 1,400 | 993
Stock Purchase Plan [Member] |  |  |  |
Employee share-based compensation | 90 | 64 | 150 | 342
Stock Issued to Outside Directors [Member] |  |  |  |
Employee share-based compensation | 11 | 22 | 22 | 22
Restricted Stock Units (RSUs) [Member] |  |  |  |
Employee share-based compensation | 152 | 47 | 224 | 47
Performance Shares [Member] |  |  |  |
Employee share-based compensation | $ 82 | $ 0 | $ 121 | $ 0

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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 + Details
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