Employee Retirement and Profit Sharing Plans (Components of pension income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 25, 2017
Employee Retirement and Profit Sharing Plans [Abstract]
Interest cost on projected benefit obligation	$ 781	$ 796	$ 806
Expected return on plan assets	(1,409)	(1,416)	(1,332)
Amortization of unrecognized actuarial loss	403	336	524
Net pension income	$ (225)	$ (284)	$ (2)