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Allowance for Doubtful Accounts - Narrative (Detail) - USD ($) | Jul. 31, 2022 | May 01, 2022 | Aug. 01, 2021 | May 02, 2021
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Allowance for doubtful accounts [Member] |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |
Allowance for doubtful accounts | $ 349,000 | $ 292,000 | $ 580,000 | $ 591,000

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