The Company and a Summary of Its Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	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)	$ (766)	$ 182
Amount of gain or (loss) reclassified from accumulated OCI into income (effective portion)	(142)	857
Foreign currency forward contracts [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in Accumulated OCI on derivatives (effective portion)	(766)	182
Foreign currency forward contracts [Member] | Cash Flow Hedging [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)	$ (142)	$ 857