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Employee Retirement and Profit Sharing Plans (Components of pension (income) expense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 25, 2017
Mar. 26, 2016
Mar. 28, 2015
Employee Retirement and Profit Sharing Plans [Abstract]      
Interest cost on projected benefit obligation $ 806 $ 803 $ 832
Expected return on plan assets (1,332) (1,389) (1,388)
Amortization of unrecognized actuarial loss 524 648 300
Net pension (income) expense $ (2) $ 62 $ (256)