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v3.25.1

Note 8 - Leases (Details Textual) | 3 Months Ended
--- | ---
Mar. 31, 2025
Minimum [Member] |
Lease Term (Year) | 1 year
Maximum [Member] |
Lease Term (Year) | 13 years

X
- Definition Represents lease term. + References No definition available. + Details
Name: | amtx_LeaseTerm
Namespace Prefix: | amtx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |