Intangible Assets and Acquisition Related Charges (Details) (USD $)	12 Months Ended					12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Dec. 29, 2012 SiliconBlue Technologies Ltd.	Dec. 16, 2011 SiliconBlue Technologies Ltd.	Dec. 29, 2012 SiliconBlue Technologies Ltd. Developed technology	Dec. 29, 2012 SiliconBlue Technologies Ltd. Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)				6 years 3 months 18 days		7 years	5 years 6 months
Gross				$ 18,500,000	$ 18,500,000	$ 10,700,000	$ 7,800,000
Accumulated Amortization				(3,070,000)		(1,592,000)	(1,478,000)
Intangible assets, net of amortization				15,430,000		9,108,000	6,322,000
Amortization of acquired intangible assets	2,900,000	100,000	0
Expected acquired intangible assets amortization expense, 2013				2,900,000
Expected acquired intangible assets amortization expense, 2014				2,900,000
Expected acquired intangible assets amortization expense, 2015				2,900,000
Expected acquired intangible assets amortization expense, 2016				2,900,000
Expected acquired intangible assets amortization expense, 2017				2,200,000
Expected acquired intangible assets amortization expense, 2018				1,500,000
Acquisition related charges	$ 1,200,000	$ 400,000	$ 0