Goodwill and Intangible Assets, Net (Intangible Assets) (Details) - USD ($) $ in Thousands	Oct. 02, 2016	Apr. 03, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 476,322	$ 474,712
Impairment	(336)
Accumulated Amortization	(358,800)	(346,951)
Net Assets	117,186	127,761
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	280,484	279,514
Impairment	(315)
Accumulated Amortization	(211,733)	(205,307)
Net Assets	68,436	74,207
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	5,391	5,211
Impairment	0
Accumulated Amortization	(5,129)	(4,576)
Net Assets	262	635
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	173,097	172,787
Impairment	(21)
Accumulated Amortization	(133,973)	(130,745)
Net Assets	39,103	42,042
Intellectual property licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	11,550	11,400
Impairment	0
Accumulated Amortization	(2,835)	(1,819)
Net Assets	8,715	9,581
Order backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	5,800	5,800
Impairment	0
Accumulated Amortization	(5,130)	(4,504)
Net Assets	$ 670	$ 1,296