Intangible Assets - Summary of Intangible Assets (Detail) - USD ($)	Jan. 31, 2021	May 03, 2020	Feb. 02, 2020	Apr. 28, 2019
Intangible Assets [Line Items]
Tradename	$ 540,000	$ 540,000	$ 4,804,000	$ 7,232,000
Intangible assets	3,098,000	3,380,000	7,738,000
Customer Relationships [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	2,012,000	2,238,000	2,313,000	2,538,000
Non-Compete Agreement [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 546,000	$ 602,000	$ 621,000	$ 678,000