Document And Entity Information - shares	6 Months Ended
	Jul. 01, 2018	Jul. 27, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	NETGEAR, INC
Entity Central Index Key	0001122904
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jul. 01, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		31,808,206