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Impairment of Goodwill and Intangible Assets (Details)
3 Months Ended 12 Months Ended
Jan. 02, 2016
USD ($)
Jan. 02, 2016
USD ($)
segment
Jan. 03, 2015
USD ($)
Dec. 28, 2013
USD ($)
Finite-Lived Intangible Assets [Line Items]        
Number of Operating Segments | segment   2    
Number of industry segments | segment   1    
Impairment of goodwill and intangible assets   $ 21,655,000 $ 0 $ 0
Impairment $ 9,000,000 8,995,000    
SiliconBlue Technologies Ltd. and Silicon Image, Inc        
Finite-Lived Intangible Assets [Line Items]        
Impairment of goodwill and intangible assets   12,700,000    
SiliconBlue Technologies Ltd. and Silicon Image, Inc | Developed technology        
Finite-Lived Intangible Assets [Line Items]        
Impairment   3,856,000    
SiliconBlue Technologies Ltd. and Silicon Image, Inc | Customer relationships        
Finite-Lived Intangible Assets [Line Items]        
Impairment   5,139,000    
Lattice        
Finite-Lived Intangible Assets [Line Items]        
Impairment of goodwill and intangible assets   0    
Qterics        
Finite-Lived Intangible Assets [Line Items]        
Impairment of goodwill and intangible assets   $ 12,700,000    
Goodwill and Intangible Asset Impairment, Percent   92.00%