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Income Taxes - Summary of Valuation Allowances Against Net Deferred Income Tax Assets (Detail) - USD ($) $ in Thousands | Aug. 03, 2025 | Apr. 27, 2025 | Jul. 28, 2024
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Valuation Allowance [Line Items] |  |  |
Valuation allowance | $ 26,991 | $ 26,303 | $ 23,656
U.S. Capital Loss Carryforward [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Valuation allowance | 2,330 | 2,330 | 2,330
U.S. Federal and State [Member] | Deferred Income Tax Assets [Member] |  |  |
Valuation Allowance [Line Items] |  |  |
Valuation allowance | $ 24,661 | $ 23,973 | $ 21,326

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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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