XML 69 R49.htm IDEA: XBRL DOCUMENT
v2.4.0.8

8. Fair Value of Warrants (Details) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2014
Fair Value Of Warrants Details |
Expected dividend yield | 0.00%
Risk-free interest rate, min | 0.90%
Risk-free interest rate, max | 1.32%
Expected volatility, min | 77.79%
Expected volatility, max | 78.09%
Expected Life (years), min | 3 years 2 months 12 days
Expected Life (years), max | 3 years 9 months 18 days
Exercise price | $ 0.001
Company stock price | $ 5.80

X
- Definition Mandatorily redeemable Series B convertible preferred stock + References No definition available. + Details
Name: | AMTX_CompanyStockPriceMin
Namespace Prefix: | AMTX_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition RepaymentsOfBorrowingsUnderShortTermFacilities + References No definition available. + Details
Name: | AMTX_ExercisePrice
Namespace Prefix: | AMTX_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition RepaymentsOfBorrowingUnderSecuredDebtFacilities + References No definition available. + Details
Name: | AMTX_ExpectedLifeYearsMax
Namespace Prefix: | AMTX_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Custom Element. + References No definition available. + Details
Name: | AMTX_ExpectedVolatilityMax
Namespace Prefix: | AMTX_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | AMTX_FairValueOfWarrantsDetailsAbstract
Namespace Prefix: | AMTX_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Custom Element. + References No definition available. + Details
Name: | AMTX_RiskfreeInterestRateMax
Namespace Prefix: | AMTX_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsExpectedDividendRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsExpectedTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsExpectedVolatilityRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Risk-free interest rate assumption used in valuing an instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsRiskFreeInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration