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Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
May 03, 2025 | Apr. 27, 2024 | Apr. 29, 2023 | Apr. 30, 2022
Unrecognized Tax Benefits | $ 2,185 | $ 2,130 | $ 2,096 | $ 2,079
Changes in Income Tax if All Uncertain Tax Positions Prevail | 1,700 |  |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 300 |  |  |
Domestic Tax Jurisdiction [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |
Open Tax Year | 2019 2020 2021 2022 2023 2024 |  |  |
State and Local Jurisdiction [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |
Open Tax Year | 2018 2019 2020 2021 2022 2023 2024 |  |  |

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