Intangible Assets - Summary of Intangible Assets (Detail) - USD ($)	Jan. 30, 2022	May 02, 2021		Jan. 31, 2021	May 03, 2020
Intangible Assets [Line Items]
Tradename	$ 540,000	$ 540,000		$ 540,000
Intangible assets	2,722,000	3,004,000	[1]	3,098,000
Customer Relationships [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	1,711,000	1,937,000		2,012,000	$ 2,238,000
Non-Compete Agreement [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 471,000	$ 527,000		$ 546,000	$ 602,000

[1] Derived from audited financial statements.