Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Jul. 30, 2023	Apr. 30, 2023		Jul. 31, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 8,408	$ 7,908		$ 12,690
Work-in-process	2,430	2,602		4,985
Finished goods	32,979	34,570		46,074
Inventories	$ 43,817	$ 45,080	[1]	$ 63,749

[1] Derived from audited consolidated financial statements.