Goodwill and Intangible Assets (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 01, 2012	Jul. 03, 2011
Aggregated amortization expenses for our purchased intangible assets
Total amortization expense	$ 1,113	$ 1,251
Existing technology [Member]
Aggregated amortization expenses for our purchased intangible assets
Total amortization expense	865	949
Weighted Average Lives (in months)	66 months
Patents/Core technology [Member]
Aggregated amortization expenses for our purchased intangible assets
Total amortization expense	128	129
Weighted Average Lives (in months)	61 months
Distributor relationships [Member]
Aggregated amortization expenses for our purchased intangible assets
Total amortization expense	25	25
Weighted Average Lives (in months)	72 months
Customer relationships [Member]
Aggregated amortization expenses for our purchased intangible assets
Total amortization expense	82	81
Weighted Average Lives (in months)	80 months
Tradenames / Trademarks [Member]
Aggregated amortization expenses for our purchased intangible assets
Total amortization expense	$ 13	$ 67
Weighted Average Lives (in months)	35 months