Cover Page - shares	9 Months Ended
	Sep. 29, 2019	Oct. 25, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 29, 2019
Document Transition Report	false
Entity File Number	000-50350
Entity Registrant Name	NETGEAR, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0419172
Entity Address, Address Line One	350 East Plumeria Drive,
Entity Address, City or Town	San Jose,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	(408)
Local Phone Number	907-8000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Smaller Reporting Company	false
Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	NTGR
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding (In shares)		30,147,504
Entity Central Index Key	0001122904
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false