Acquired Intangible Assets - Components of Acquired Intangible Assets (Details) (USD $)			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013 Developed technology	Mar. 31, 2012 Developed technology	Mar. 30, 2013 Customer relationships	Mar. 31, 2012 Customer relationships	Mar. 30, 2013 Customer backlog	Mar. 31, 2012 Customer backlog	Mar. 30, 2013 Trade name and trademarks	Mar. 31, 2012 Trade name and trademarks	Mar. 30, 2013 Fair value of below-market lease (non-current portion)	Mar. 31, 2012 Fair value of below-market lease (non-current portion)	Mar. 30, 2013 Change of control agreements	Mar. 31, 2012 Change of control agreements	Mar. 30, 2013 Patents	Mar. 31, 2012 Patents	Mar. 30, 2013 In-process research and development		Mar. 31, 2012 In-process research and development
Acquired Finite-Lived Intangible Assets [Line Items]
Gross intangible assets	$ 24,481,000	$ 18,941,000	$ 13,073,000	$ 8,100,000	$ 3,154,000	$ 2,700,000	$ 750,000	$ 700,000	$ 463,000	$ 400,000	$ 310,000	$ 310,000	$ 100,000	$ 100,000	$ 3,427,000	$ 3,427,000	$ 3,204,000	[1]	$ 3,204,000	[1]
Less accumulated amortization	(15,393,000)	(10,609,000)
Total acquired intangible assets	9,088,000	8,332,000
Fair value of below-market lease (current portion)	0	110,000
Less accumulated amortization	0	(110,000)
Weighted average useful life			7 years 9 months 18 days		5 years 7 months 6 days		1 year		3 years		3 years 9 months 18 days		1 year		13 years 1 month 6 days
Accelerated depreciation expense due to change in useful life assumption																	$ 2,300,000

[1] In the fourth quarter of 2013, the Company identified IPR&D programs that we no longer expect to derive value from. As a result, the Company accelerated amortization of $2.3 million on these assets. See Note 6 “Business Acquisition” for additional discussion on these IPR&D programs.