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Balance Sheet Components Balance Sheet Components (Schedule of Goodwill) (Details) - USD ($)
$ in Thousands
Apr. 02, 2017
Jan. 01, 2017
Goodwill [Roll Forward]    
Goodwill (Period Start) $ 85,463 $ 85,463
Goodwill (Period End) 85,463 85,463
Arlo [Member]    
Goodwill [Roll Forward]    
Goodwill (Period Start) 21,149  
Goodwill (Period End) 21,149 21,149
Connected Home [Member]    
Goodwill [Roll Forward]    
Goodwill (Period Start) 28,035  
Goodwill (Period End) 28,035 28,035
SMB [Member]    
Goodwill [Roll Forward]    
Goodwill (Period Start) 36,279  
Goodwill (Period End) $ 36,279 $ 36,279