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Restructuring Costs - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 09, 2021
Aug. 29, 2021
Aug. 30, 2020
Nov. 28, 2021
Nov. 29, 2020
May 30, 2021
May 31, 2020
Restructuring Cost and Reserve [Line Items]              
Proceeds from sales of property and equipment       $ 1,082,000 $ 12,885,000    
Gain on sale of property       (22,000) 34,000    
Expected restructuring costs       $ 45,000,000      
Salad Dressing Plant In Ontario, California              
Restructuring Cost and Reserve [Line Items]              
Proceeds from sales of property and equipment     $ 4,900,000        
Gain on sale of property     2,800,000   $ 2,800,000    
Impairment of assets held for sale             $ 10,900,000
Manufacturing Operations in Hanover, Pennsylvania              
Restructuring Cost and Reserve [Line Items]              
Impairment of assets held for sale     $ 8,800,000        
Rock Hill South Carolina Distribution Facility              
Restructuring Cost and Reserve [Line Items]              
Proceeds from sales of property and equipment $ 1,100,000            
Gain on sale of property $ 600,000 $ 600,000          
Impairment of assets held for sale           $ 0