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16. Income Tax (Details 3) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred Tax Assets & (Liabilities): |  |
Organization, start-up costs & intangible assets | $ 8,750 AMTX_OrganizationStartupCostsIntangibleAssets | $ 9,303 AMTX_OrganizationStartupCostsIntangibleAssets
Stock-based compensation | 86 AMTX_DeferredTaxAssetStockbasedCompensation | 115 AMTX_DeferredTaxAssetStockbasedCompensation
Property, plant and equipment | (22,015)AMTX_DeferredTaxAssetPropertyPlantAndEquipment | (18,930)AMTX_DeferredTaxAssetPropertyPlantAndEquipment
Net operating loss carryforward and Credits | 49,645 AMTX_DeferredTaxAssetNetOperatingLossCarryforward | 49,139 AMTX_DeferredTaxAssetNetOperatingLossCarryforward
Convertible debt | (5)AMTX_DeferredTaxAssetConvertibleDebt | (5)AMTX_DeferredTaxAssetConvertibleDebt
Ethanol Credits | 1,500 AMTX_EthanolCredit | 1,500 AMTX_EthanolCredit
Debt extinguishment | 2,239 AMTX_DeferredTaxAssetDebtExtinguishment | 2,536 AMTX_DeferredTaxAssetDebtExtinguishment
Other, net | 592 AMTX_DeferredTaxAssetOtherNet | 1,544 AMTX_DeferredTaxAssetOtherNet
Subtotal | 40,792 us-gaap_DeferredTaxAssetsGross | 45,202 us-gaap_DeferredTaxAssetsGross
Valuation Allowance | (40,792)us-gaap_DeferredTaxAssetsValuationAllowance | (45,202)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred tax assets (liabilities) | $ 0 us-gaap_DeferredTaxAssetsNet | $ 0 us-gaap_DeferredTaxAssetsNet

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- Definition Custom Element. + References No definition available. + Details
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- Definition Custom Element. + References No definition available. + Details
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