Revenue from Contracts with Customers - Summary of the activity associated with deferred revenue (Detail) - USD ($) $ in Thousands	6 Months Ended
	Oct. 30, 2022		Oct. 31, 2021
Revenue From Contract With Customer [Abstract]
Beginning balance	$ 520	[1]	$ 540
Revenue recognized on contract liabilities	(1,747)		(1,445)
Payments received for services not yet rendered	2,754		1,584
Ending balance	$ 1,527		$ 679

[1] Derived from audited financial statements.