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v3.25.1

Note 15 - Subsequent Events (Details Textual) $ in Millions | May 07, 2025 USD ($)
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PUPA Ninth Amendment [Member] | Subsequent Event [Member] |
Preferred Units Issued Value | $ 116.8

X
- Definition Represents preferred units issued value. + References No definition available. + Details
Name: | amtx_PreferredUnitsIssuedValue
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_PreferredUnitsByNameAxis=amtx_PupaNinthAmendmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |