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Income Taxes - Summary of Valuation Allowances Against U.S. Net Deferred Income Tax Assets (Detail) - USD ($) $ in Thousands | Apr. 28, 2024 | Apr. 30, 2023 | May 01, 2022 | May 02, 2021
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Valuation Allowance [Line Items] |  |  |  |
Valuation allowance | $ 22,004 | $ 18,675 | $ 11,857 | $ 11,674
U.S. Capital Loss Carry Forwards and Credits [Member] |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance | 2,330 | 2,330 |  |
U.S. Federal and State [Member] | Deferred Income Tax Assets [Member] |  |  |  |
Valuation Allowance [Line Items] |  |  |  |
Valuation allowance | $ 19,674 | $ 16,345 |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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