Segment Information Segment Information (Schedule of Net Revenue By Channel) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016		Oct. 01, 2017	Oct. 02, 2016
Revenue, Major Customer [Line Items]
Net revenue	$ 355,483	$ 338,458		$ 1,009,863	$ 960,369
Arlo [Member]
Revenue, Major Customer [Line Items]
Net revenue	110,460	48,642	[1]	249,904	111,492	[1]
Connected Home [Member]
Revenue, Major Customer [Line Items]
Net revenue	183,099	215,116	[1]	563,365	629,880	[1]
SMB [Member]
Revenue, Major Customer [Line Items]
Net revenue	61,924	74,700	[1]	196,594	218,997	[1]
Service Provider [Member]
Revenue, Major Customer [Line Items]
Net revenue	51,539	70,850		164,544	222,469
Service Provider [Member] | Arlo [Member]
Revenue, Major Customer [Line Items]
Net revenue	5,794	3,513		15,743	14,730
Service Provider [Member] | Connected Home [Member]
Revenue, Major Customer [Line Items]
Net revenue	44,631	66,042		146,309	204,250
Service Provider [Member] | SMB [Member]
Revenue, Major Customer [Line Items]
Net revenue	$ 1,114	$ 1,295		$ 2,492	$ 3,489

[1] Prior year financial information for each reportable segment has been recast to conform to the current reportable segment structure effective on January 1, 2017.