Concentration of Risk (Details) - item	12 Months Ended
	Mar. 26, 2017	Mar. 27, 2016	Mar. 29, 2015
Concentration Risk
Maximum amount of revenue from the top single customer threshold	10.00%	10.00%	10.00%
Revenues | Customer Concentration Risk | Top ten customers
Concentration Risk
Concentration risk (as a percent)	26.00%	22.00%	20.00%
Revenues | Supplier Concentration Risk | Top ten vendors
Concentration Risk
Number of vendors	10	10	10
Concentration risk (as a percent)	41.00%	42.00%	41.00%
Revenues | Supplier Concentration Risk | Otter Products LLC
Concentration Risk
Concentration risk (as a percent)	11.00%	15.00%
Revenues | Supplier Concentration Risk | CommScope Incorporated
Concentration Risk
Concentration risk (as a percent)	10.00%	11.00%	14.00%