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Allowance for Doubtful Accounts - Summary of the Activity in the Allowance for Doubtful Accounts (Detail) - Allowance for doubtful accounts [Member] - USD ($)
6 Months Ended
Oct. 29, 2023
Oct. 30, 2022
Valuation and Qualifying Accounts Disclosure [Line Items]    
Beginning balance $ 342,000 $ 292,000
Provision for bad debts 228,000 49,000
Write-offs, net of recoveries (29,000) (53,000)
Ending balance $ 541,000 $ 288,000