The Company and a Summary of Its Significant Accounting Policies - Effects of Foreign Currency Forward Contracts in Cash Flow Hedging Relationships (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Apr. 01, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivatives (Effective Portion)	$ (733)	$ (766)	$ 182
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	(858)	(142)	857
Derivatives in Cash Flow Hedging Relationships [Member] | Foreign currency forward contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivatives (Effective Portion)	(733)	(766)	182
Derivatives in Cash Flow Hedging Relationships [Member] | Foreign currency forward contracts [Member] | Cost of product revenues [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	$ (858)	$ (142)	$ 857