Acquired Intangible Assets - Components of Acquired Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 28,838	$ 25,223
Less accumulated amortization	(19,880)	(18,378)
Total acquired intangible assets	8,958	6,845
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 20,001	13,315
Weighted average useful life	6 years 8 months 12 days
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 3,154	3,154
Weighted average useful life	5 years 7 months 6 days
Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 1,341	1,250
Weighted average useful life	10 months 24 days
Trade name and trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 463	463
Weighted average useful life	3 years
Fair value of below-market lease
Acquired Finite-Lived Intangible Assets [Line Items]
Below Market Lease, Gross	$ 310	310
Weighted average useful life	3 years 9 months 18 days
Change of control agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 100	100
Weighted average useful life	1 year
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 3,469	3,427
Weighted average useful life	12 years 10 months 24 days
In-process research and development
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 0	$ 3,204