Share-Based Compensation - Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation expense	$ 6,105	$ 8,088	$ 11,475
Cost of Sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation expense	722	898	1,118
Selling, General and Administrative Expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation expense	4,213	5,330	8,244
Research and Development Expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total share-based compensation expense	$ 1,170	$ 1,860	$ 2,113