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Note 5 - Stock-based Compensation (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 26, 2024 | Mar. 28, 2023 | Mar. 26, 2024 | Mar. 28, 2023 | Feb. 08, 2022 | May 24, 2018
Share-Based Payment Arrangement, Expense | $ 40,000 | $ 43,000 | $ 78,000 | $ 89,000 |  |
The 2018 Omnibus Equity Incentive Plan [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  | 1,050,000 | 900,000

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