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Note 5 - Stock-based Compensation (Details Textual) - USD ($) | 9 Months Ended |  |
--- | --- | --- | ---
Jun. 27, 2023 | Jun. 28, 2022 | Feb. 08, 2022 | May 24, 2018
Share-Based Payment Arrangement, Expense | $ 104,000 | $ 207,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 45,000 | 105,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) | 2,000 | 28,797 |  |
Proceeds from Stock Options Exercised | $ 5,000 | $ 90,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value | 296,000 |  |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ 104,000 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 10 months 24 days |  |  |
Non-qualified Stock Option [Member] | Senior Vice President of Finance [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  | 25,000 |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 10 months 24 days |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 25,750 | 28,000 |  |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ 106,000 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ 2.29 |  |  |
Restricted Stock [Member] |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 40,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | 0 | 9,256 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) |  | $ 4.35 |  |
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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