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Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($) $ in Thousands | May 01, 2022 | May 02, 2021 | May 03, 2020 | Apr. 28, 2019
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
customers | $ 22,613 | $ 38,455 |  |
Accounts receivable, net | 22,226 | 37,726 |  |
Allowance for doubtful accounts [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Valuation allowance, balance | (292) | (591) | $ (472) | $ (393)
Allowance for cash discounts [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Valuation allowance, balance | (74) | (124) |  |
Allowance for sales returns and allowances [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Valuation allowance, balance | $ (21) | $ (14) |  |

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