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Note 8 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Apr. 27, 2024 | Apr. 29, 2023 | Apr. 30, 2022 | May 01, 2021
Unrecognized Tax Benefits, Ending Balance | $ 2,130 | $ 2,096 | $ 2,079 | $ 2,055
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 | 2018 2019 2020 2021 2022 2023 |  |  |
State and Local Jurisdiction [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |
Open Tax Year | 2017 2018 2019 2020 2021 2022 2023 |  |  |

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- Definition Tax year that remains open to examination under enacted tax laws, in YYYY format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-15 + Details
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