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1. Notes of Activities and Summary of Significant Accounting Policies (Details)
Sep. 30, 2012
Sep. 30, 2011
Notes Of Activities And Summary Of Significant Accounting Policies Details    
Aemetis Series B preferred    3,125,008
Aemetis Series B warrants 3,008 429,609
Aemetis Common stock options and warrants 1,776,067 7,187,734
Convertible interest & fees on note  – related party 1,029,973 33,734,053
Total number of potentially dilutive shares excluded from the diluted net income/(loss) per share calculation 2,809,048 44,476,404