Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Jul. 30, 2023	Apr. 30, 2023		Jul. 31, 2022	May 01, 2022
Intangible Assets [Line Items]
Tradename	$ 540	$ 540		$ 540
Intangible assets	2,158	2,252	[1]	2,534
Customer Relationships [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	1,260	1,335		1,561	$ 1,636
Non-Compete Agreement [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 358	$ 377		$ 433	$ 452

[1] Derived from audited consolidated financial statements.