General and Summary of Significant Accounting Policies - Summary of Foreign Currency Exchange Gains (Losses) by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 28, 2024	Apr. 30, 2023	May 01, 2022
Foreign Currency Exchange Gain And Loss [Line Items]
Foreign currency exchange gains (losses)	$ 545	$ 500	$ (132)
China [Member]
Foreign Currency Exchange Gain And Loss [Line Items]
Foreign currency exchange gains (losses)	604	588	(104)
Canada [Member]
Foreign Currency Exchange Gain And Loss [Line Items]
Foreign currency exchange gains (losses)	(58)	$ (88)	$ (28)
Vietnam [Member]
Foreign Currency Exchange Gain And Loss [Line Items]
Foreign currency exchange gains (losses)	$ (1)