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Revenue from Contracts with Customers - Summary of the Activity of Deferred Revenue (Detail) - USD ($)
12 Months Ended
Apr. 27, 2025
Apr. 28, 2024
Apr. 30, 2023
Revenue From Contract With Customer [Abstract]      
Beginning Balance $ 1,495,000 $ 1,192,000 $ 520,000
Revenue recognized on contract liabilities (3,980,000) (3,932,000) (4,885,000)
Payments received for services not yet rendered 2,907,000 4,235,000 5,557,000
Ending Balance $ 422,000 $ 1,495,000 $ 1,192,000