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1. Nature of Activities and Summary of Significant Accounting Policies (Details Narrative) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Accounting Policies [Abstract]    
Selling, general and administrative expense   $ 2,500us-gaap_OtherSellingGeneralAndAdministrativeExpense
Obligation to repay 1,800AMTX_ObligationToRepay  
Accrued liability 800us-gaap_AccruedLiabilitiesCurrentAndNoncurrent 100us-gaap_AccruedLiabilitiesCurrentAndNoncurrent
Warrants 18,644us-gaap_WarrantsAndRightsOutstanding  
Carrying amount of debt obligations 68,200us-gaap_DebtInstrumentFaceAmount  
Debt fair value $ 67,500us-gaap_LongTermDebtFairValue