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