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v3.21.2

Agreements (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Agreements |  |  |  |
Ethanol sales | $ 0 | $ 1,666 | $ 0 | $ 26,049
Wet distiller's grains sales | 10,630 | 7,466 | 21,665 | 15,840
Corn oil sales | 1,695 | 1,051 | 2,737 | 1,979
Corn purchases | 42,166 | 22,541 | 80,159 | 51,755
Accounts receivable | 65 | 55 | 65 | 55
Accounts payable | $ 509 | $ 250 | $ 509 | $ 250

X
- References No definition available. + Details
Name: | amtx_AccountsPayable
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | amtx_AccountsReceivable
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition North America (United States) + References No definition available. + Details
Name: | amtx_CornOilSales
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | amtx_CornPurchases
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from borrowing under secured debt facilities + References No definition available. + Details
Name: | amtx_EthanolSales
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Wet distiller's grains sales + References No definition available. + Details
Name: | amtx_WetDistillersGrainsSales
Namespace Prefix: | amtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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Period Type: | duration