Intangible Assets and Acquisition Related Charges (Details) (USD $)	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets	$ 700,000
Expected acquired intangible assets amortization expense, 2017	2,200,000
Expected acquired intangible assets amortization expense, 2018	1,500,000
SiliconBlue Technologies Ltd.
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	6 years 3 months 18 days
Gross	18,500,000
Accumulated Amortization	(6,753,000)
Intangible assets, net of amortization	11,747,000
Amortization of acquired intangible assets		700,000
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
SiliconBlue Technologies Ltd. | Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	7 years
Gross	10,700,000
Accumulated Amortization	(3,504,000)
Intangible assets, net of amortization	7,196,000
SiliconBlue Technologies Ltd. | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period (in years)	5 years 6 months
Gross	7,800,000
Accumulated Amortization	(3,249,000)
Intangible assets, net of amortization	$ 4,551,000