Amount of guarantee fee on outstanding balance as a percentage.

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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- Definition

Amount of transactions with related party during the financial reporting period.

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- Definition

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

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- Definition

Value, after value of shares used to satisfy grantee's tax withholding obligation for award under share-based payment arrangement, of restricted shares issued. Excludes cash used to satisfy grantee's tax withholding obligation.

+ References

No definition available.

+ Details

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Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=amtx_VariousBoardMembersMember
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_RelatedPartyTransactionAxis=amtx_ExpensedEmployeeReimbursementsMember
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Balance Type:
Period Type:

- Details

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- Details

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Note 12 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands				12 Months Ended
	Jan. 12, 2022	Nov. 04, 2021	May 07, 2020	Dec. 31, 2022	Dec. 31, 2021
Prepaid Expense, Current, Total				$ 4,248	$ 5,598
Mr. McAfee [Member]
Accrued Liabilities, Current, Total				0	300
Various Board Members [Member]
Share-Based Payment Arrangement, Expense				400	400
Restricted Stock, Value, Shares Issued Net of Tax Withholdings				900
Employment Agreements and Expense Reimbursements [Member] \| Mr. McAfee [Member]
Related Party Transaction, Amounts of Transaction				400	400
Expensed Employee Reimbursements [Member] \| Mr. McAfee [Member]
Related Party Transaction, Amounts of Transaction				300	15
Prepayments [Member] \| Mr. McAfee [Member]
Related Party Transaction, Amounts of Transaction				200
Prepaid Expense, Current, Total				100
Stock Option Expenses [Member] \| Executive Officer [Member]
Related Party Transaction, Due from (to) Related Party, Total				106
Guarantee Fee [Member] \| Mr. McAfee [Member]
Related Party Transaction, Amounts of Transaction		$ 400	$ 600
Guarantee Fee Percentage On Outstanding Balance			0.10%
One-time Guarantee Fee [Member] \| Mr. McAfee [Member]
Related Party Transaction, Amounts of Transaction	$ 2,000
Board Compensation Fees [Member] \| Various Board Members [Member]
Related Party Transaction, Amounts of Transaction				$ 300	$ 200