XML 52 R1.htm IDEA: XBRL DOCUMENT v3.2.0.727
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2015
Jul. 31, 2015
Document And Entity Information    
Entity Registrant Name AEMETIS, INC.  
Entity Central Index Key 0000738214  
Document Type 10-Q  
Document Period End Date Jun. 30, 2015  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Is Entity a Well-known Seasoned Issuer? No  
Is Entity a Voluntary Filer? No  
Is Entity's Reporting Status Current? Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   19,473,442
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2015