Document And Entity Information
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 2 - Cash, Cash Equivalents, and Restricted Cash
Income tax benefit
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 3 - Inventories
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 4 - Property, Plant and Equipment
us-gaap_RestrictedCashAndCashEquivalents
Restricted cash
Trading Arrangements, by Individual [Table]
Note 5 - Debt
Material Terms of Trading Arrangement [Text Block]
Note 6 - Basic and Diluted Net Loss Per Share
Note 7 - Revenue and Accounts Receivable
Second Tranche [Member
represents Second Tranche.
Note 8 - Leases
Note 9 - Stock Based Compensation
amtx_PreferredUnitsRedeemedValue
Preferred Units Redeemed, Value
Represents preferred units redeemed, value.
Note 10 - Warrants to Purchase Common Stock
Minimum [Member]
Note 12 - Agreements
Product and Service, Other [Member]
Note 13 - Segment Information
Statistical Measurement [Domain]
amtx_PreferredUnitsIssuedValue
Preferred Units Issued Value
Represents preferred units issued value.
Note 2 - Cash, Cash Equivalents, and Restricted Cash - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details)
Maximum [Member]
Note 3 - Inventories - Schedule of Inventories (Details)
Market value per share on grant date (in dollars per share)
Note 4 - Property, Plant and Equipment - Schedule of Property, Plant, and Equipment (Details)
Note 4 - Property, Plant and Equipment - Depreciation of Property, Plant, and Equipment (Details)
Note 5 - Debt - Schedule of Debt (Details)
Note 5 - Debt - Maturities of Long-term Debt (Details)
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note 6 - Basic and Diluted Net Loss Per Share - Schedule of Dilutive Securities (Details)
Note 6 - Basic and Diluted Net Loss Per Share - Schedule of Dilutive Securities (Details) (Parentheticals)
Note 7 - Revenue and Accounts Receivable - Disaggregation of Revenue (Details)
Note 7 - Revenue and Accounts Receivable - Schedule Of America By Product Category (Details)
Note 8 - Leases - Lease Cost (Details)
Note 8 - Leases - Non-cash Flow Information Related to ROU Asset and Lease Liabilities (Details)
Note 8 - Leases - Supplemental Balance Sheet Information Related to Leases (Details)
Note 8 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) (Parentheticals)
Basis of Presentation and Significant Accounting Policies [Text Block]
Note 8 - Leases - Maturities of Leases (Details)
amtx_LeaseTerm
Lease Term (Year)
Represents lease term.
Note 8 - Leases - Lease Income (Details)
Note 8 - Leases - Future Minimum Lease Payments (Details)
Note 9 - Stock-Based Compensation - Schedule of Share-based Payment Award (Details)
Note 9 - Stock-Based Compensation - Fair Value Assumptions (Details)
Supplemental Balance Sheet Information Related to Leases [Table Text Block]
Tabular disclosure of supplemental balance sheet information related to leases.
Note 10 - Warrants to Purchase Common Stock - Schedule of Warrants or Rights (Details)
Ethanol Sales, Wet Distillers Grain and Corn Oil Sales [Member]
Represents Ethanol Sales, Wet Distillers Grain and Corn Oil Sales.
Note 12 - Agreements - Schedule of Working Capital Agreement Activity (Details)
Note 13 - Segment Information - Schedule of Segment Reporting Information (Details)
Revolving Notes Series B [Member]
Represents Revolving Notes Series B
Accretion of the lease liability
Represents operating lease liability accretion.
Notes To Financial Statements
Counterparty Name [Axis]
Notes To Financial Statements [Abstract]
Options Granted, Weighted-Average Exercise Price (in dollars per share)
Exercised, Weighted-Average Exercise Price (in dollars per share)
Lease Term [Table Text Block]
Tabular disclosure of lease term.
CDS Sales [Member]
Represents CDS sales.
Land
Asset Pledged as Collateral [Member]
us-gaap_IncreaseDecreaseInInventories
Inventories
Counterparty Name [Domain]
Accrued interest expense and fees
PTC [Member]
PTC
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Wet Distillers Grains [Member]
Product or service, or a group of similar products or similar services.
Segment Reporting [Text Block]
Renewable Energy, Biodiesel [Member]
Product or service, or a group of similar products or similar services.
Award Type [Axis]
Segment Reporting [Table Text Block]
Adjustments to reconcile net loss to net cash used in operating activities:
Plan Name [Axis]
Plan Name [Domain]
Working capital Loan [Member]
Represents working capital loans.
Outstanding, Average Remaining Term in Years (Year)
Warrants and Rights Outstanding, Term (Year)
Stock-based compensation expense
Share-Based Payment Arrangement, Expense
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders' deficit
Consolidation Items [Axis]
Cash and Cash Equivalent [Table]
Pledged Status [Domain]
Title and Position [Axis]
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidExpense
Prepaid expenses
Pledged Status [Axis]
Share-based compensation
Selling, general and administrative expenses
Consolidation Items [Domain]
Allocation of corporate overhead expense to segments
The value of the corporate overhead expense allocated to segments.
Authorized, shares (in shares)
Lessee, Lease, Description [Table]
Reclassification, Type [Axis]
Share-Based Payment Arrangement [Text Block]
Reclassification, Type [Domain]
Lease Contractual Term [Axis]
Lease Contractual Term [Domain]
Changes in operating assets and liabilities:
Accounts payable
us-gaap_IncreaseDecreaseInAccountsPayable
Variable Interest Entity Disclosure [Text Block]
us-gaap_PreferredUnitsIssued
Preferred Units, Issued (in shares)
Restricted cash
Energy [Domain]
us-gaap_PreferredUnitsAuthorized
Preferred Units, Authorized (in shares)
Energy [Axis]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net change in cash, cash equivalents, and restricted cash for period
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows
Effect of exchange rate changes on cash, cash equivalents, and restricted cash
us-gaap_OtherExpenses
Other expense (income), net
Preferred Units by Name [Axis]
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, cash equivalents, and restricted cash at beginning of period
Cash, cash equivalents and restricted cash at end of period
Antidilutive Securities, Name [Domain]
Statement [Table]
Credit Facility [Axis]
Operating cash flows used in operating leases
Credit Facility [Domain]
amtx_IncreaseDecreaseInProductionTaxCredits
Section 45Z production tax credits
Amount change in the production tax credits.
Revolving Credit Facility [Member]
Machinery and equipment
Prepaid expenses
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Financing lease liabilities arising from obtaining right of use assets
us-gaap_FinanceLeasePrincipalPayments
Payments on finance leases
amtx_PreferredUnitsAggregateRedemptionPriceIncrementalFee
Preferred Units, Aggregate Redemption Price, Incremental Fee
The incremental fee included in the aggregate redemption price of the preferred units.
Line of Credit Facility, Lender [Domain]
PUPA Ninth Amendment [Member]
Represents the ninth amendment for the preferred unit purchase agreement.
amtx_PolicyTable
Lender Name [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
Common stock granted (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
Common Units [Member]
Represents common units.
Issuance of common stock for services
Issuance of common stock for services (in shares)
Product and Service [Domain]
2028
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearTwo
Product and Service [Axis]
2029
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree
us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization
Accumulated depreciation
2027
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths
Consolidated Entities [Axis]
Useful life (Year)
Property and equipment, at cost
Consolidated Entities [Domain]
us-gaap_RepaymentsOfDebt
Repayments of Debt
2031, Operating leases
Property, plant and equipment, net
Total property, plant & equipment, net
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments, Operating leases
Thereafter, Operating leases
2030
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour
2031
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive
Finance leases
Operating leases
Fair value per option on grant date (in dollars per share)
us-gaap_AccountsPayableCurrentAndNoncurrent
Accounts Payable
2028, Operating leases
2027, Operating leases
2030, Operating leases
Proceeds from borrowings
Proceeds from Issuance of Debt
2029, Operating leases
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Balance, Shares Available for Grant (in shares)
Balance, Shares Available for Grant (in shares)
Operating lease expense
Schedule of Maturities of Long-Term Debt [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares)
us-gaap_AccruedBonusesCurrentAndNoncurrent
Accrued Bonuses
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Balance, outstanding (in shares)
Balance, outstanding (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Balance, Weighted-Average Exercise Price (in dollars per share)
Balance, Weighted-Average Exercise Price (in dollars per share)
Statement [Line Items]
Common Stock, Shares Issued (in shares)
Grantee Status [Domain]
Common Stock, Shares Outstanding (in shares)
Share-Based Payment Arrangement, Employee [Member]
Award Type [Domain]
us-gaap_LessorOperatingLeasePaymentsToBeReceived
Total future lease commitments
Risk-free interest rate
Common Stock, Shares Authorized (in shares)
Grantee Status [Axis]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedAfterRollingYearFive
Thereafter
Revenue Participation Term Notes [Member]
Represents Revenue Participation Term Notes.
Operating Lease, Lease Income [Table Text Block]
Expected volatility
Term Notes [Member]
represents Term Notes.
Acquisition Term Notes [Member]
Represents Acquisition Term Notes.
us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextRollingTwelveMonths
2027
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
us-gaap_LessorOperatingLeasePaymentsToBeReceivedRollingYearThree
2029
us-gaap_LessorOperatingLeasePaymentsToBeReceivedRollingYearTwo
2028
us-gaap_LessorOperatingLeasePaymentsToBeReceivedRollingYearFive
2031
Common stock, $0.001 par value; 140,000 authorized; 72,049 and 66,189 shares issued and outstanding each period, respectively
Third Eye Capital [Member]
Represents Third Eye Capital.
us-gaap_LessorOperatingLeasePaymentsToBeReceivedRollingYearFour
2030
Customer Four [Member]
Relating to customer four.
Board of Directors [Member]
Relating to the board of directors.
us-gaap_FinanceLeaseRightOfUseAssetAmortization
Amortization of right-of-use assets
Schedule of Inventory, Current [Table Text Block]
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Outstanding, Weighted - Average Exercise Price (in dollars per share)
Outstanding, Weighted - Average Exercise Price (in dollars per share)
Proceeds from sales of common stock
Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]
Schedule of Cash and Cash Equivalents [Table Text Block]
Fair value of warrants issued to subordinated debt holders
Represents the fair value of warrants issued in noncash financing activities.
Accounts payable
Total finance lease liability
Total finance lease liabilities
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Thereafter, Finance leases
2031, Finance leases
2027, Finance leases
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive loss
us-gaap_FinanceLeaseLiabilityNoncurrent
Other long-term liabilities
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total lease payments, Finance leases
us-gaap_FinanceLeaseLiabilityCurrent
Other current liability
us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount
Less imputed interest, Finance leases
Short term borrowings
Short-Term Debt
Capital expenditures
Concentration Risk Type [Axis]
2028, Finance leases
2030, Finance leases
2029, Finance leases
Interest on lease liabilities
Operating cash flows used in finance leases
Thereafter
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less imputed interest, Operating leases
Amortization of right-of-use assets
us-gaap_OperatingLeaseLiabilityNoncurrent
Other long-term liabilities
Total operating lease liability
Total operating lease liabilities
us-gaap_OperatingLeaseLiabilityCurrent
Other current liability
Financing cash flows used in finance leases
Amount of finance lease principal payments (reversal).
amtx_AmountGuaranteedByRelatedParty
Amount Guaranteed by Related Party
Amount guaranteed by related party.
Current portion of long term debt
Long-Term Debt, Current Maturities
Proceeds from sale of fixed assets
Expected life (years) (Year)
amtx_PropertyPlantAndEquipmentBeforeAccumulatedDepreciationAndAmortizationAndFinanceLeaseRightofuseAssetAfterAmortization
Total gross property, plant & equipment
Amount, before accumulated depreciation and amortization, of property, plant, and equipment and amount of finance lease right-of-use asset, after amortization.
Concentration Risk Type [Domain]
EBITDA
Amount of EBITDA.
us-gaap_LongTermDebtNoncurrent
Total long-term debt
Construction in progress
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Class of Warrant or Right [Table]
Credit Agreement [Member]
Represents the credit agreement.
Third Eye Capital Term Notes [Member]
Represents Third Eye Capital term notes.
Third Eye Capital Revolving Credit Facility [Member]
Represents Third Eye Capital revolving credit facility.
us-gaap_LongTermDebt
Long-Term Debt
amtx_DebtAgreementMaximumBorrowingCapacity
Debt Agreement, Maximum Borrowing Capacity
Represents maximum borrowing capacity under debt agreement.
Cilion Shareholder Seller Notes Payable [Member]
Represents Cilion shareholder seller notes payable.
us-gaap_ProceedsFromIssuanceOfSecuredDebt
Proceeds from Issuance of Secured Debt
Subordinated Notes 1 [Member]
Represents subordinated notes 1.
EB-5 Promissory Notes [Member]
Represents EB-5 promissory notes.
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Statement of Stockholders' Equity [Abstract]
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]
Third Eye Capital Revenue Participation Term Notes [Member]
Represents Third Eye Capital revenue participation term notes.
Third Eye Capital Acquisition Term Notes [Member]
Represents Third Eye Capital acquisition term notes.
Class of Warrant or Right [Axis]
Third Eye Capital Fuels Revolving Line [Member]
Represents Third Eye Capital fuels revolving line.
Class of Warrant or Right [Domain]
Third Eye Capital Carbon Revolving Line [Member]
Represents Third Eye capital carbon revolving line.
Statement of Cash Flows [Abstract]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]
amtx_ForwardPurchaseAgreementFixedPriceEnergyMeasure
Forward Purchase Agreement, Fixed Price, Energy Measure (Millions of British Thermal Unit)
Nominal energy measure used to calculate payments on the forward purchase agreement at a fixed price.
Stockholders' deficit:
Equity Components [Axis]
amtx_ForwardPurchaseAgreementFixedPrice
Forward Purchase Agreement, Fixed Price (in USD per Millions of British Thermal Unit)
The fixed price related to the forward purchase agreement.
Construction Loan Agreement 2 [Member]
Represents construction loan agreement 2.
Proceeds from exercise of stock options
Equity Component [Domain]
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)
Finance lease right of use assets
amtx_FinanceLeaseRightofuseAssetAfterAccumulatedAmortization
Amount of finance lease right of use asset after amortization.
AOCI Attributable to Parent [Member]
us-gaap_ClassOfWarrantOrRightOutstanding
Outstanding, warrants (in shares)
Outstanding, warrants (in shares)
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Cost of goods sold
us-gaap_InventoryWriteDown
Inventory Write-down
Bad debt expense
Machinery and Equipment [Member]
Corn purchases
Furniture and Fixtures [Member]
Stock-based compensation
Furniture and fixtures
amtx_LenderDebtRenewalAndWaiverFeePayments
Lender debt renewal and waiver fee payments
The amount of lender debt renewal and waiver fee payments.
Grant proceeds for capital expenditures
The amount of grant proceeds received for capital expenditures.
Subordinated debt extension fees added to debt
The amount of subordinated debt extension fees added to debt.
Capital expenditures in accounts payable and accruals
The amount of capital expenditures in accounts payable.
Accrued capital expenditures in construction financing
The amount of capital expenditures purchased on financing.
Lender debt extension, waiver, and other fees added to debt
The amount of lender debt extension waiver and other fees added to debt.
Substantial Doubt about Going Concern [Text Block]
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Issuance and exercise of warrants (in shares)
The number of shares for issuance and exercise of warrants.
Supplemental disclosures of cash flow information, cash paid:
us-gaap_AccountsReceivableNet
Accounts Receivable, after Allowance for Credit Loss
Liabilities, Current [Abstract]
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Accretion and other expenses of Series A preferred units
Accounts receivable
Customer Concentration Risk [Member]
Income taxes paid
Lease, Cost [Table Text Block]
us-gaap_MarketingExpense
Marketing Expense
amtx_DebtInstrumentRedemptionFee
Debt Instrument, Redemption Fee
Represents redemption fee under debt instrument agreement.
us-gaap_GainLossOnDispositionOfAssets1
Loss on sale/disposal of assets
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Forfeited/expired, outstanding (in shares)
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less accumulated depreciation
Accumulated other comprehensive loss
Forfeited/expired, Weighted-Average Exercise Price (in dollars per share)
Other Commitments [Axis]
us-gaap_DebtCurrent
Short term debt
Other Commitments [Domain]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Loss before income taxes
Additional paid-in capital
Debt Disclosure [Text Block]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Property held for development
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Capital expenditures
Issuance of common stock
us-gaap_DebtInstrumentCarryingAmount
Total debt
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
us-gaap_AmortizationOfFinancingCostsAndDiscounts
Debt related fees and amortization expense
Current assets:
Stock options exercised
Schedule of Debt [Table Text Block]
us-gaap_AssetsCurrent
Total current assets
Gross profit
Gross profit (loss)
us-gaap_DebtInstrumentFeeAmount
Debt Instrument, Fee Amount
Issuance of common stock (in shares)
us-gaap_AccountsReceivableGrossCurrent
Accounts receivable
Debt Instrument, Name [Domain]
Stock options exercised (in shares)
Exercised, outstanding (in shares)
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Depreciation
Depreciation
Related and Nonrelated Parties [Axis]
Stock issued for services
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Term Loan On Equipment Purchase [Member]
Represents Term Loan On Equipment Purchase.
us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Debt issuance costs
Operating activities:
Investing activities:
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
Financing activities:
Debt related fees and amortization expense
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
Position [Axis]
Petroleum Tax Credits PTC [Member]
Represents the petroleum tax credits.
Position [Domain]
us-gaap_InterestCostsIncurredCapitalized
Capitalized Interest Costs, Including Allowance for Funds Used During Construction
Long [Member]
Land Lease [Member]
Represents the land lease.
Operating Segments [Member]
Accounting Policies [Abstract]
Segments [Domain]
Equipment Financing [Member]
Equipment Financing
Segments [Axis]
Schedule of America by Product Category [Table Text Block]
Tabular disclosure of schedule of America by product category.
Other Members of Management [Member]
Represents other members of management.
Income Statement [Abstract]
Ethanol Sales [Member]
Represents Ethanol sales.
Operating Agreement with Gemini Edibles and Fats India Private Limited [Member]
Related to operating agreement with Gemini Edibles and Fats India Private Limited.
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Construction Loan Agreement [Member]
Related to construction loan agreement.
Collaborative Arrangement Disclosure [Text Block]
Customer Three [Member]
Related to customer three.
Net loss
Net loss
us-gaap_DebtLongtermAndShorttermCombinedAmount
Debt, Long-Term and Short-Term, Combined Amount
Total debt, net of debt issuance costs
Common Stock Options and Warrants [Member]
Represents common stock options and warrants.
Intangibles and other amortization expense
Debt with Conversion Feature [Member]
Represents debt with conversion feature.
us-gaap_OtherCommitment
Other Commitment
Depreciation Of Property, Plant, and Equipment [Table Text Block]
Tabular disclosure of depreciation of property, plant, and equipment.
Series A preferred units
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Noncurrent
Restricted Stock [Member]
Fuels Revolving Line [Member]
Represents Fuels Revolving Line.
amtx_DebtInstrumentExtendedFeeRateAddedToBalanceOutstanding
Debt Instrument Fee Rate
Represents extended fee rate added to balance outstanding under debt instrument.
Segment Reporting, All Other Segments, Including Corporate [Member]
Related to all other segments including corporate segment.
Accounting Standards Update and Change in Accounting Principle [Table]
EB5 Phase I Notes [Member]
Represents E B5 Phase I Notes.
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Related and Nonrelated Parties [Domain]
Secunderabad Oils [Member]
Represents Secunderabad Oils.
us-gaap_DeferredFinanceCostsNet
Debt Issuance Costs, Net
EB5 Phase II Notes [Member]
Represents EB5 Phase II Notes.
Related Party Transaction [Table]
Related Party Transactions Disclosure [Text Block]
Financing Agreement For Capital Expenditures [Member]
Represents financing agreement for capital expenditures.
Issuance and exercise of warrants
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
us-gaap_StockRedeemedOrCalledDuringPeriodShares
Stock Redeemed or Called During Period, Shares (in shares)
Statement of Financial Position [Abstract]
Outstanding Warrants [Text Block]
Disclosure of outstanding warrants.
us-gaap_LiabilitiesNoncurrent
Total long-term liabilities
Variable Interest Entity, Primary Beneficiary [Member]
Other assets
Finance leases (in years) (Year)
Variable Interest Entity [Table]
Liabilities, Noncurrent [Abstract]
us-gaap_RepaymentsOfOtherLongTermDebt
Repayments of borrowings
Other long term debt
Nonmonetary Transaction Type [Domain]
Nonmonetary Transaction Type [Axis]
us-gaap_IncreaseDecreaseInOtherOperatingAssets
Other assets
Document Type
Document Information [Line Items]
Document Quarterly Report
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
Operating leases (in years) (Year)
Document Information [Table]
Operating and Finance Leases [Text Block]
The entire disclosure for operating leases and finance leases.
us-gaap_PaymentsForRepurchaseOfRedeemableConvertiblePreferredStock
Payments on Series A preferred financing
Total Number of Potentially Dilutive Shares Excluded from the basic and diluted net loss per share calculation (in shares)
Antidilutive Securities [Axis]
Entity Interactive Data Current
Document Transition Report
Diluted (in shares)
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Net loss per share
Supplemental Non-cash Flow Information Related to Leases [Table Text Block]
Tabular disclosure of supplemental non-cash flow information related to leases.
Basic (in shares)
us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Month)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Antidilutive Security, Excluded EPS Calculation [Table]
Basic (in dollars per share)
Settlement of accounts payable via issuance of common stock
EB-5 notes
Title and Position [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative [Table]
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative [Table Text Block]
Plant and buildings
Document Fiscal Period Focus
Pledging Purpose [Axis]
Customer [Domain]
Document Fiscal Year Focus
Pledging Purpose [Domain]
Depreciation and amortization
Amendment Flag
US Treasury (UST) Interest Rate [Member]
Lease income
Common Stock [Member]
Other liabilities
us-gaap_IncreaseDecreaseInOtherOperatingLiabilities
Document Period End Date
Building [Member]
Other amortization
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
Options Granted, shares (in shares)
Options Granted, shares (in shares)
Variable lease expense
Legal Entity [Axis]
us-gaap_OperatingLeaseCost
Total operating lease cost
Short-term lease expense
us-gaap_LeaseCost
Total finance lease cost
Entity File Number
amtx_IncreaseDecreaseInTaxCreditSaleReceivable
Tax credit sale receivable
Amount of increase (decrease) in tax credit sale receivables.
Entity Tax Identification Number
Supplemental disclosures of cash flow information, non-cash transactions:
Disaggregation of Revenue [Table Text Block]
Disaggregation of Revenue [Table]
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
Mr. McAfee [Member]
Represents Mr. McAfee.
Entity Current Reporting Status
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
us-gaap_ResultsOfOperationsTransportationCosts
Oil and Gas, Result of Operation, Transportation Cost
Entity Filer Category
Entity Shell Company
Entity Emerging Growth Company
Entity Small Business
Employment Agreements and Expense Reimbursements [Member]
Represents employment agreements and expense reimbursements.
us-gaap_OperatingIncomeLoss
Operating income (loss)
Interest expense
Jessup Land Acquisition Notes [Member]
Represents Jessup Land Acquisition Notes.
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)
Short Term Promissory Note [Member]
Represents short term promissory note.
Interest and debt amortization expense
us-gaap_Revenues
Revenues
Interest rate expense
LCFS Credit Sales [Member]
Represents LCFS Credit Sales.
Gas Sales [Member]
Represents gas sales.
Entity Address, State or Province
Entity Address, City or Town
Inventory, Current [Table]
RIN Sales [Member]
Represents RIN Sales.
us-gaap_InterestExpenseNonoperating
Total interest expense
Contact Personnel Name
Accumulated deficit
Entity Address, Address Line One
City Area Code
Local Phone Number
Entity Address, Postal Zip Code
Revenue from Contract with Customer [Text Block]
Customer Two [Member]
Represents customer two.
Cash and Cash Equivalents Disclosure [Text Block]
Title of 12(b) Security
Preferred Units, Class [Domain]
amtx_NumberOfMajorCustomers
Number of Major Customers
Represents number of major customers.
Security Exchange Name
amtx_Gallonperyear
GallonPerYear (Gallon)
Represents amount of gallon per year.
Trading Symbol
California Dairy Renewable Natural Gas [Member]
Components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.
Debt Instrument, Convertible, Conversion Price (in dollars per share)
Debt Instrument, Convertible, Conversion Price (in dollars per share)
California Ethanol [Member]
Represents California Ethanol segment.
India Biodiesel Segment [Member]
Represents India Biodiesel.
Customer One [Member]
Represents customer one.
Class of Stock [Axis]
Prime Rate [Member]
Variable Rate [Axis]
Variable Rate [Domain]
Related Party Transaction [Domain]
Corn Purchases [Member]
Represents corn purchases.
Corn Oil Sales [Member]
Represents corn oil sales.
Entity Common Stock, Shares Outstanding
Related Party Transaction [Axis]
Other comprehensive loss
J.D. Heiskell [Member]
Represents information a bout J.D. Heiskell.
Earnings Per Share [Text Block]
Other current assets
Chief Executive Officer [Member]
Capital Units by Class [Axis]
Natural Gas and Natural Gas Liquids (NGL) [Member]
Capital Unit, Class [Domain]
Term Loan [Member]
Senior Secured Term Loan.
amtx_DebtExtensionFeePercentage
Debt Extension Fee, Percentage
The percentage of debt extension fee.
Section 45Z Production Tax
Production Tax Credit
Amount of production tax credit as of balance sheet date.
Weighted-average shares outstanding
Property, Plant, and Equipment [Table]
Common Stock, Par Value (in dollars per share)
AAFK [Member]
Represents AAFK.
amtx_ClassOfWarrantOrRightExercisedDuringPeriod
Exercised, warrants (in shares)
The number of warrants or rights exercised during period.
Basis of Accounting, Policy [Policy Text Block]
Granted, warrants (in shares)
The number of warrants or rights granted during period.
Reclassified From Other Current Assets [Member]
Represents reclassified from other current assets.
GAFI [Member]
GAFI.
us-gaap_OtherNonoperatingIncomeExpense
Other income
Construction Loan Agreements [Member]
Construction Loan Agreements
Foreign currency translation gain (loss)
Foreign currency translation loss
MVRS Construction Financing Note [Member]
MVRS Construction Financing
Protair-X and Third Eye Capital [Member]
Represents Protair-X and Third Eye Capital.
Long-Lived Asset, Class [Axis]
Subordinated Notes [Member]
Subordinated Notes.
Total assets as of June 30, 2026
Assets
Total assets
Forward Sales Commitments [Member]
Represents forward sales commitments.
ACCI [Member]
ACCI.
Cash and cash equivalents
Warrants in Connection With Subordinated Notes [Member]
Warrants in Connection With Subordinated Notes.
amtx_ShippingAndHandlingCosts
Shipping and Handling Costs
Amount of costs related to shipping and handling.
us-gaap_AllowanceForDoubtfulAccountsReceivable
Accounts Receivable, Allowance for Credit Loss
us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Common Stock, Capital Shares Reserved for Future Issuance (in shares)
Diluted (in dollars per share)
us-gaap_ContractWithCustomerLiability
Contract with Customer, Liability
Customer [Axis]
Income tax expense (benefit)
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations, net of monetized tax credits.
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Cash paid for interest
Inventory Disclosure [Text Block]
Finished goods
India Biodiesel Factoring Arrangement [Member]
Represents the India Biodiesel Factoring Arrangement.
Exercised, Weighted - Average Exercise Price (in dollars per share)
Exercise price per share of warrants or rights exercised during period.
Granted, Weighted - Average Exercise Price (in dollars per share)
Exercise price per share of warrants or rights granted during period.
Inventories
Total inventories
The 2019 Stock Plan [Member]
Represents information about the 2019 Stock Plan.
Forfeited/expired, shares available (in shares)
Represents the number of shares no longer available for grant due to forfeitures and expirations during period.
Raw materials
Aemetis Biogas LLC [Member]
Relating to Aemetis Biogas LLC.
us-gaap_StockholdersEquity
Total stockholders' deficit
Balance
Balance
Work-in-progress
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
us-gaap_FinanceLeaseRightOfUseAsset
Property and equipment, net
Operating lease right-of-use assets
Other current liabilities
Other long term liabilities
Series A Preferred Stocks [Member]
Represents series A Preferred Stocks.
amtx_CommonUnitsIssuanceValue
Common Units Issuance Value (in dollars per share)
Represents common units issuance value.
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Revenues
Revenues
amtx_CommonUnitsAuthorized
Common Units Authorized (in shares)
Represents common units authorized.
Preferred Units Series A [Member]
Represents Preferred Units Series A.
amtx_CommonUnitsIssued
Common Units Issued (in shares)
Represents common units issued.
Revenue, Segment Benchmark [Member]