Stock-Based Compensation (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 01, 2012	Apr. 03, 2011	Mar. 28, 2010
Summary of stock-based compensation expense
Stock-based compensation expense	$ 32,592	$ 35,007	$ 35,694
Segment, Continuing Operations [Member]
Summary of stock-based compensation expense
Stock-based compensation expense	31,688	31,635	30,462
Cost of Revenues [Member]
Summary of stock-based compensation expense
Stock-based compensation expense	2,506	2,247	2,276
Engineering and Development [Member]
Summary of stock-based compensation expense
Stock-based compensation expense	14,199	14,222	14,094
Sales and Marketing [Member]
Summary of stock-based compensation expense
Stock-based compensation expense	6,667	6,768	6,182
General and Administrative [Member]
Summary of stock-based compensation expense
Stock-based compensation expense	8,316	8,398	7,910
Segment, Discontinued Operations [Member]
Summary of stock-based compensation expense
Stock-based compensation expense	$ 904	$ 3,372	$ 5,232