Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 05, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	AutoWeb, Inc.
Entity Central Index Key	0001023364
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Common Stock, Shares Outstanding		13,146,831
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Entity Interactive Data Current	Yes
Entity Incorporation State Country Code	DE
Entity File Number	001-34761
Title of 12b security	Common Stock, par value $0.001 per share
Trading Symbol	AUTO
Security Exchange Name	NASDAQ