Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	May 03, 2020	Apr. 28, 2019		Apr. 29, 2018	Apr. 30, 2017
Intangible Assets [Line Items]
Tradenames	$ 540	$ 7,232		$ 683	$ 683
Intangible assets	3,380	10,448	[1]
Customer Relationships [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	2,238	2,538		2,839	664
Non-Compete Agreement [Member]
Intangible Assets [Line Items]
Finite-lived intangible assets, net	$ 602	$ 678		$ 753	$ 828

[1] At April 28, 2019, intangible assets totaled $10.5 million, of which $3.9 million and $6.6 million were classified as intangible assets and within noncurrent assets held for sale – discontinued operation, respectively, in the accompanying Consolidated Balance Sheets.