Stock-Based Employee Compensation-Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 13,352	$ 13,272	$ 16,733
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	1,189	1,113	1,784
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	5,601	6,692	8,566
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	5,887	5,250	5,983
Discontinued operations
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 675	$ 217	$ 400