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Revenue (Schedule of Net Revenue Disaggregated by Geographical Region and Sales Channel) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 03, 2021
Sep. 27, 2020
Oct. 03, 2021
Sep. 27, 2020
Disaggregation of Revenue [Line Items]        
Total net revenue $ 290,150 $ 378,114 $ 916,886 $ 888,129
Service provider        
Disaggregation of Revenue [Line Items]        
Total net revenue 42,175 74,055 101,125 146,562
Non-service provider        
Disaggregation of Revenue [Line Items]        
Total net revenue 247,975 304,059 815,761 741,567
Connected Home        
Disaggregation of Revenue [Line Items]        
Total net revenue 208,539 316,739 679,320 711,419
Connected Home | Service provider        
Disaggregation of Revenue [Line Items]        
Total net revenue 41,726 73,343 99,355 144,182
Connected Home | Non-service provider        
Disaggregation of Revenue [Line Items]        
Total net revenue 166,813 243,396 579,965 567,237
SMB        
Disaggregation of Revenue [Line Items]        
Total net revenue 81,611 61,375 237,566 176,710
SMB | Service provider        
Disaggregation of Revenue [Line Items]        
Total net revenue 449 712 1,770 2,380
SMB | Non-service provider        
Disaggregation of Revenue [Line Items]        
Total net revenue 81,162 60,663 235,796 174,330
Americas        
Disaggregation of Revenue [Line Items]        
Total net revenue 195,123 277,891 626,907 638,327
Americas | Connected Home        
Disaggregation of Revenue [Line Items]        
Total net revenue 158,888 248,888 523,008 557,862
Americas | SMB        
Disaggregation of Revenue [Line Items]        
Total net revenue 36,235 29,003 103,899 80,465
EMEA        
Disaggregation of Revenue [Line Items]        
Total net revenue 56,940 63,705 179,802 154,212
EMEA | Connected Home        
Disaggregation of Revenue [Line Items]        
Total net revenue 28,253 42,760 91,975 91,934
EMEA | SMB        
Disaggregation of Revenue [Line Items]        
Total net revenue 28,687 20,945 87,827 62,278
APAC        
Disaggregation of Revenue [Line Items]        
Total net revenue 38,087 36,518 110,177 95,590
APAC | Connected Home        
Disaggregation of Revenue [Line Items]        
Total net revenue 21,398 25,091 64,337 61,623
APAC | SMB        
Disaggregation of Revenue [Line Items]        
Total net revenue $ 16,689 $ 11,427 $ 45,840 $ 33,967