Purchased Intangible Assets - Components of Purchased Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2014	Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 77,290	$ 9,123
Accumulated Amortization	7,387	5,069
Net Carrying Value	69,903	4,054
Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	73,461	5,400
Accumulated Amortization	4,957	3,021
Net Carrying Value	68,504	2,379
Acquisition-related intangibles, Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	1,010	1,010
Accumulated Amortization	993	791
Net Carrying Value	17	219
Acquisition-related intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	74,471	6,410
Accumulated Amortization	5,950	3,812
Net Carrying Value	68,521	2,598
Other purchased intangibles, Technology-related [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	2,819	2,713
Accumulated Amortization	1,437	1,257
Net Carrying Value	$ 1,382	$ 1,456