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Accounts Receivable - Summary of Accounts Receivable (Detail) - USD ($)	Apr. 27, 2025	Apr. 28, 2024	Apr. 30, 2023	May 01, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
customers	$ 22,799,000	$ 21,660,000	$ 25,244,000
Accounts receivable, net	21,844,000	21,138,000	24,778,000
Allowance for doubtful accounts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Valuation allowance, balance	(651,000)	(356,000)	(342,000)	$ (292,000)
Allowance for cash discounts [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Valuation allowance, balance	(108,000)	(113,000)	(96,000)
Allowance for sales returns and allowances [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Valuation allowance, balance	$ (196,000)	$ (53,000)	$ (28,000)

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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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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-Section 40
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-Publisher FASB
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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of valuation and qualifying accounts and reserves.

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