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Revenue from Contracts with Customers - Summary of the activity associated with deferred revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jul. 31, 2022
Aug. 01, 2021
Revenue From Contract With Customer [Abstract]    
Beginning balance $ 520 [1] $ 540
Revenue recognized on contract liabilities (821) (611)
Payments received for services not yet rendered 1,669 765
Ending balance $ 1,368 $ 694
[1] Derived from audited financial statements.