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Business Combinations and Goodwill (Details) (USD $)
6 Months Ended
Mar. 30, 2013
Dec. 29, 2012
Jun. 30, 2012
SiliconBlue Technologies Ltd.
Dec. 16, 2011
SiliconBlue Technologies Ltd.
Jul. 15, 2011
SiliconBlue Technologies Ltd.
Jul. 15, 2011
Rise Technology Development Limited
Business Acquisition [Line Items]            
Cash purchase price       $ 63,200,000   $ 1,000,000
Goodwill 44,808,000 44,808,000   43,900,000   900,000
Acquired intangible assets         18,500,000  
Step-up in inventory     $ 300,000