Revenue Components, Geographic Revenues and Significant Customers (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 01, 2012	Jan. 01, 2012	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 26, 2010	Sep. 26, 2010	Jun. 27, 2010	Apr. 01, 2012	Apr. 03, 2011	Mar. 28, 2010
Summary of net revenues by product category
Net revenues	$ 135,073	$ 142,779	$ 136,275	$ 144,481	$ 146,069	$ 146,256	$ 135,376	$ 130,674	$ 558,608	$ 558,375	$ 518,471
Host Products [Member]
Summary of net revenues by product category
Net revenues									429,820	422,143	393,855
Network Products [Member]
Summary of net revenues by product category
Net revenues									72,541	85,244	82,309
Silicon Products [Member]
Summary of net revenues by product category
Net revenues									$ 56,247	$ 50,988	$ 42,307