Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 31, 2012
Consolidated Statements of Comprehensive Income [Abstract]
Net sales	$ 714,338	$ 809,786	$ 426,843
Cost of sales	358,175	414,595	196,402
Gross profit	356,163	395,191	230,441
Operating expenses:
Research and development	126,189	114,071	85,697
Selling, general and administrative	74,861	76,998	65,208
Patent infringement settlements, net	695
Restructuring and other, net	(598)	3,292
Total operating expenses	201,147	194,361	150,905
Income from operations	155,016	200,830	79,536
Interest income, net	848	440	517
Other expense, net	(127)	(80)	(70)
Income before income taxes	155,737	201,190	79,983
Provision (benefit) for income taxes	47,626	64,592	(8,000)
Net income	108,111	136,598	87,983
Change in unrealized gain (loss) on marketable securities, net of tax	33	(157)	(8)
Comprehensive income	$ 108,144	$ 136,441	$ 87,975
Basic earnings per share	$ 1.72	$ 2.12	$ 1.35
Diluted earnings per share	$ 1.65	$ 2.00	$ 1.29
Basic weighted average common shares outstanding	62,926	64,580	64,934
Diluted weighted average common shares outstanding	65,535	68,454	68,063