Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 19, 2019
Cover page.
Document Transition Report	false
Document Quarterly Report	true
Title of 12(b) Security	Common Stock, par value $0.001 per share
Entity Incorporation, State or Country Code	DE
Entity Registrant Name	ARLO TECHNOLOGIES, INC.
Entity Central Index Key	0001736946
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Entity File Number	001-38618
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		74,863,222
Entity Tax Identification Number	38-4061754
Entity Address, Address Line One	3030 Orchard Parkway
Entity Address, City or Town	San Jose,
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
Trading Symbol	ARLO
Security Exchange Name	NYSE
City Area Code	408
Local Phone Number	890-3900