Goodwill and Intangible Assets, Net (Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 28, 2015	Mar. 29, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 337,112	$ 346,626
Accumulated Amortization	(332,409)	(341,091)
Net Assets	4,703	5,535
Existing technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	203,914	211,170
Accumulated Amortization	(199,852)	(206,491)
Net Assets	4,062	4,679
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	4,411	4,411
Accumulated Amortization	(3,996)	(3,850)
Net Assets	415	561
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	128,787	131,045
Accumulated Amortization	(128,561)	(130,750)
Net Assets	$ 226	$ 295