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Revenue from Contracts with Customers - Summary of the activity associated with deferred revenue (Detail) - USD ($)
$ in Thousands
9 Months Ended
Jan. 30, 2022
Jan. 31, 2021
Revenue From Contract With Customer [Abstract]    
Beginning balance $ 540 [1] $ 502
Revenue recognized on contract liabilities (2,276) (1,893)
Payments received for services not yet rendered 2,254 1,619
Ending balance $ 518 $ 228
[1] Derived from audited financial statements.