XML 22 R50.htm IDEA: XBRL DOCUMENT v2.4.0.8

9. Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Warranty liability	$ 179
Level 1
Warranty liability	0
Level 2
Warranty liability	0
Level 3
Warranty liability	$ 179

X

- Definition

Custom Element.

+ References

No definition available.

+ Details

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