Revenue (Schedule of Net Revenue Disaggregated by Geographical Region and Sales Channel) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Total net revenue	$ 280,052	$ 230,852	$ 510,015	$ 479,934
Service provider
Disaggregation of Revenue [Line Items]
Total net revenue	45,023	27,823	72,507	66,117
Non-service provider
Disaggregation of Revenue [Line Items]
Total net revenue	235,029	203,029	437,508	413,817
Connected Home
Disaggregation of Revenue [Line Items]
Total net revenue	230,017	167,495	394,680	336,860
Connected Home | Service provider
Disaggregation of Revenue [Line Items]
Total net revenue	44,152	26,901	70,839	63,719
Connected Home | Non-service provider
Disaggregation of Revenue [Line Items]
Total net revenue	185,865	140,594	323,841	273,141
SMB
Disaggregation of Revenue [Line Items]
Total net revenue	50,035	63,357	115,335	143,074
SMB | Service provider
Disaggregation of Revenue [Line Items]
Total net revenue	871	922	1,668	2,398
SMB | Non-service provider
Disaggregation of Revenue [Line Items]
Total net revenue	49,164	62,435	113,667	140,676
Americas
Disaggregation of Revenue [Line Items]
Total net revenue	202,246	157,170	360,436	305,199
Americas | Connected Home
Disaggregation of Revenue [Line Items]
Total net revenue	179,810	131,669	308,974	245,356
Americas | SMB
Disaggregation of Revenue [Line Items]
Total net revenue	22,436	25,501	51,462	59,843
EMEA
Disaggregation of Revenue [Line Items]
Total net revenue	48,359	43,091	90,507	100,054
EMEA | Connected Home
Disaggregation of Revenue [Line Items]
Total net revenue	31,203	17,526	49,174	43,216
EMEA | SMB
Disaggregation of Revenue [Line Items]
Total net revenue	17,156	25,565	41,333	56,838
APAC
Disaggregation of Revenue [Line Items]
Total net revenue	29,447	30,591	59,072	74,681
APAC | Connected Home
Disaggregation of Revenue [Line Items]
Total net revenue	19,004	18,300	36,532	48,288
APAC | SMB
Disaggregation of Revenue [Line Items]
Total net revenue	$ 10,443	$ 12,291	$ 22,540	$ 26,393