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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Assets Held For Sale (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Nov. 29, 2020
Aug. 30, 2020
Feb. 23, 2020
Feb. 28, 2021
Feb. 23, 2020
May 31, 2020
Property, Plant and Equipment [Line Items]            
Property and equipment, net       $ 168,693   $ 192,338
Proceeds from sales of property and equipment       12,885 $ 2,432  
Gain on sale of property       $ (39) $ (135)  
Salad Dressing Plant In Ontario, California            
Property, Plant and Equipment [Line Items]            
Impairment of assets held for sale     $ 10,900      
Property and equipment, net           2,600
Operating and finance lease, current           300
Operating and finance lease, noncurrent           2,900
Proceeds from sales of property and equipment   $ 4,900        
Gain on sale of property   2,800        
Manufacturing Operations in Hanover, Pennsylvania            
Property, Plant and Equipment [Line Items]            
Impairment of assets held for sale   $ 8,800        
Property and equipment, net           $ 17,200
Proceeds from sale of property held for sale $ 8,000