Intangible Assets and Acquisition Related Charges (Details) (USD $)	3 Months Ended				3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013 SiliconBlue Technologies Ltd.	Dec. 29, 2012 SiliconBlue Technologies Ltd.	Mar. 30, 2013 SiliconBlue Technologies Ltd. Developed technology	Mar. 30, 2013 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		$ 10,700,000	$ 7,800,000
Accumulated Amortization			(3,806,000)		(1,974,000)	(1,832,000)
Intangible assets, net of amortization			14,694,000		8,726,000	5,968,000
Amortization of acquired intangible assets	700,000	700,000
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	$ 0	$ 1,000,000