CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Apr. 28, 2024	Apr. 30, 2023	May 01, 2022
Statement Of Income And Comprehensive Income [Abstract]
net loss	$ (13,819)	$ (31,520)	$ (3,211)
other comprehensive income (loss)
unrealized holding gain (loss) on investments	99	(13)	(144)
reclassification adjustment for realized loss included in net loss			30
total unrealized gain (loss) on investments	99	(13)	(114)
comprehensive loss	$ (13,720)	$ (31,533)	$ (3,325)