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Intangible Assets - Summary of Intangible Assets (Detail) - USD ($)
$ in Thousands
May 02, 2021
May 03, 2020
Apr. 28, 2019
Apr. 29, 2018
Intangible Assets [Line Items]        
Tradenames $ 540 $ 540 $ 7,232 $ 683
Intangible assets 3,004 3,380    
Customer Relationships [Member]        
Intangible Assets [Line Items]        
Finite-lived intangible assets, net 1,937 2,238 $ 2,538 $ 2,839
Non-Compete Agreement [Member]        
Intangible Assets [Line Items]        
Finite-lived intangible assets, net $ 527 $ 602