Goodwill and Intangible Assets, Net (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2014	Mar. 30, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 353,401	$ 355,702
Accumulated Amortization	(346,866)	(336,961)
Net Assets	6,535	18,741	[1]
Existing technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	217,694	217,923
Accumulated Amortization	(212,392)	(203,888)
Net Assets	5,302	14,035	[1]
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	4,411	4,411
Accumulated Amortization	(3,621)	(2,934)
Net Assets	790	1,477	[1]
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	131,045	131,093
Accumulated Amortization	(130,602)	(128,681)
Net Assets	443	2,412	[1]
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	251	2,275
Accumulated Amortization	(251)	(1,458)
Net Assets	$ 0	$ 817	[1]

[1] Includes $6.6 million in HSC assets held for sale, which were fully impaired in the first quarter of fiscal 2015.