Cover - shares	6 Months Ended
	Jun. 30, 2021	Aug. 03, 2021
Cover [Abstract]
Entity Registrant Name	AutoWeb, Inc.
Entity Central Index Key	0001023364
Document Type	10-Q
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Jun. 30, 2021
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Entity Common Stock Shares Outstanding		13,465,871
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	1-34761
Entity Incorporation State Country Code	DE
Entity Tax Identification Number	33-0711569
Entity Address Address Line 1	400 North Ashley Drive
Entity Address Address Line 2	Suite 300
Entity Address City Or Town	Tampa
Entity Address State Or Province	FL
Entity Address Postal Zip Code	33602
City Area Code	949
Local Phone Number	225-4500
Security 12b Title	Common Stock, par value $0.001 per share
Trading Symbol	AUTO
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes