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Summary of Property, Plant and Equipment (Parenthetical) (Detail) - USD ($)
$ in Thousands
May 03, 2020
Apr. 28, 2019
Property, Plant and Equipment [Line Items]    
property, plant and equipment, net $ 43,147 $ 48,389 [1]
Property, Plant and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
property, plant and equipment, net   46,500
Noncurrent Assets Held for Sale – Discontinued Operation [Member]    
Property, Plant and Equipment [Line Items]    
property, plant and equipment, net   $ 1,900
[1] At April 28, 2019, property, plant and equipment totaled $48.4 million, of which $46.5 million and $1.9 million were classified as property, plant, and equipment and within noncurrent assets held for sale – discontinued operation, respectively, in the accompanying Consolidated Balance Sheets.