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Document And Entity Information (USD $)
 9 Months Ended
Sep. 30, 2013
Nov. 12, 2013
Jun. 30, 2012
Document and Entity Information [Abstract]      
Entity Registrant Name GeoVax Labs, Inc.    
Document Type S-1    
Current Fiscal Year End Date --12-31    
Entity Common Stock, Shares Outstanding   21,716,610  
Entity Public Float     $ 10,176,944
Amendment Flag false    
Entity Central Index Key 0000832489    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Smaller Reporting Company    
Entity Well-known Seasoned Issuer No    
Document Period End Date Sep. 30, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q3