Goodwill and Intangible Assets, Net - Intangible Assets (Details) - USD ($) $ in Thousands	Jul. 02, 2017	Apr. 02, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 553,921	$ 456,868
Accumulated Amortization	(358,480)	(348,050)
Net Assets	195,441	108,818
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	318,184	262,184
Accumulated Amortization	(205,583)	(199,851)
Net Assets	112,601	62,333
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	5,391	5,391
Accumulated Amortization	(5,391)	(5,347)
Net Assets	0	44
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	201,997	173,097
Accumulated Amortization	(140,289)	(137,239)
Net Assets	61,708	35,858
Intellectual property licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	14,886	16,196
Accumulated Amortization	(4,860)	(5,613)
Net Assets	10,026	$ 10,583
Software licenses
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	3,063
Accumulated Amortization	(2,307)
Net Assets	756
Order backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	200
Accumulated Amortization	(50)
Net Assets	150
Total amortizable purchased intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	543,721
Accumulated Amortization	(358,480)
Net Assets	185,241
In-process research and development
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Assets	10,200
Accumulated Amortization	0
Net Assets	$ 10,200