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1. Nature of Activities and Summary of Significant Accounting Policies (Details 1) | Mar. 31, 2015 | Mar. 31, 2014
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Accounting Policies [Abstract] |  |
Series B preferred (convertible on a 10 to 1 basis) | 1,558AMTX_AemetisSeriesBPreferredInstant |
Common stock options and warrants | 1,251AMTX_AemetisCommonStockOptionsAndWarrantsInstant | 1,137AMTX_AemetisCommonStockOptionsAndWarrantsInstant
Total number of potentially dilutive shares excluded from the basic and diluted net income (loss) per share calculation | 2,809AMTX_TotalNumberOfPotentiallyDilutiveSharesExcludedFromDilutedNetIncomelossPerShareCalculation | 1,137AMTX_TotalNumberOfPotentiallyDilutiveSharesExcludedFromDilutedNetIncomelossPerShareCalculation

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