v3.10.0.1
Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Mar. 06, 2019
Jun. 30, 2018
Document and Entity Information [Abstract]      
Entity Registrant Name AutoWeb, Inc.    
Entity Central Index Key 0001023364    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Non-accelerated Filer    
Entity Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   12,985,950  
Entity Public Float     $ 44,000,000
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2018