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Consolidated Condensed Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Increase (decrease) in cumulative capital expenditures in accounts payable	$ 474	$ 1,535

X

- Definition

Represents net increase (decrease) in cumulative capital expenditures in accounts payable.

+ References

No definition available.

+ Details

Name:	amtx_IncreaseDecreaseInCumulativeCapitalExpendituresInAccountsPayableNet
Namespace Prefix:	amtx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration