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v3.22.4

Note 2 - Inventories (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Lower Cost Or Market Adjustment | $ 100 | $ 0

X
- Definition Represents lower cost or market adjustment. + References No definition available. + Details
Name: | amtx_LowerCostOrMarketAdjustment
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration