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10. Fair Value Measurements (Details) (USD $)	Mar. 31, 2013
Warranty liability	$ 94,278
Level 1
Warranty liability
Level 2
Warranty liability
Level 3
Warranty liability	$ 94,278

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	AMTX_WarrantyLiability
Namespace Prefix:	AMTX_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant