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5. Notes Payable (Details 1) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014
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For the twelve months ending |  |
2015 | $ 12,746 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |
2016 | 62,508 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo | [1]
2017 | 2,623 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |
2018 | 500 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |
Total debt | 78,377 AMTX_LongTermDebt1 |
Discounts | (1,076)AMTX_Discounts |
Total debt, net of discounts | $ 77,301 AMTX_TotalDebtNetOfDiscounts |
[1] | Due to the Company's ability to extend the maturity of the Third Eye Capital notes by six months from the scheduled maturity of July 2015, the amounts are reflected above as a 2016 maturity.

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