Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Oct. 01, 2016	Jan. 02, 2016	Dec. 31, 2016	Jan. 02, 2016
Finite-Lived Intangible Assets [Line Items]
Impairment	$ 7,900
SiliconBlue Technologies Ltd. and Silicon Image, Inc
Finite-Lived Intangible Assets [Line Items]
Impairment			$ 7,866	$ 8,995
SiliconBlue Technologies Ltd. and Silicon Image, Inc | Developed technology
Finite-Lived Intangible Assets [Line Items]
Impairment			0	3,856
SiliconBlue Technologies Ltd. and Silicon Image, Inc | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Impairment			$ 7,866	$ 5,139
Qterics | Disposal Group, Disposed of by Sale
Finite-Lived Intangible Assets [Line Items]
Impairment		$ 9,000
Qterics | Disposal Group, Disposed of by Sale | Developed technology
Finite-Lived Intangible Assets [Line Items]
Impairment		3,900
Qterics | Disposal Group, Disposed of by Sale | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Impairment		$ 5,100