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Employee Retirement and Profit Sharing Plans (Amounts recognized in accumulated other comprehensive loss) (Details) - USD ($)
$ in Thousands
Mar. 28, 2020
Mar. 30, 2019
Employee Retirement and Profit Sharing Plans [Abstract]    
Unamortized transition obligation
Unamortized prior service cost
Unamortized net loss 9,174 6,057
Total $ 9,174 $ 6,057