Goodwill and Intangible Assets, Net - Amortization Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013	Mar. 30, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 6,573	$ 24,793	$ 20,546
Goodwill and acquisition-related intangible asset impairment	5,600
Existing technology
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	4,534	19,730	14,131
Goodwill and acquisition-related intangible asset impairment	4,600
Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	916	3,405	874
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	1,123	916	3,225
Goodwill and acquisition-related intangible asset impairment	900
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	0	91	1,509
Non-compete agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	0	651	807
Goodwill and acquisition-related intangible asset impairment	100
Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Cost of revenue | IPR&D
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		8,700		8,700
Research and development | IPR&D
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill and acquisition-related intangible asset impairment		$ 2,400