Amount guaranteed by related party.

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The percentage of debt extension fee.

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Represents redemption fee under debt instrument agreement.

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Exercise price per share or per unit of warrants or rights outstanding.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Note 5 - Debt (Details Textual) - USD ($) $ / shares in Units, shares in Thousands							9 Months Ended		24 Months Ended
	Nov. 13, 2023	Jul. 28, 2023	May 16, 2023	Oct. 04, 2022	Mar. 02, 2022	Jul. 06, 2012	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2019	Jun. 30, 2026	Mar. 31, 2026	Jan. 07, 2026	Dec. 31, 2025	Nov. 30, 2024	Mar. 02, 2023	Dec. 31, 2021	Feb. 27, 2019	Jan. 09, 2012
Short-Term Debt							$ 60,497,000						$ 38,726,000
Long-Term Debt, Current Maturities							316,427,000						279,143,000
Debt, Long-Term and Short-Term, Combined Amount							$ 435,447,000						$ 381,764,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)							$ 12.55						$ 10.17
Warrants and Rights Outstanding, Term (Year)							3 years 4 months 20 days						3 years 8 months 23 days
Proceeds from Issuance of Debt							$ 37,481,000	$ 29,246,000
AAFK [Member] \| Warrants in Connection With Subordinated Notes [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)										113								113
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 0.01								$ 0.01
Warrants and Rights Outstanding, Term (Year)										2 years								2 years
Third Eye Capital [Member] \| Chief Executive Officer [Member]
Amount Guaranteed by Related Party			$ 10,000,000
Third Eye Capital [Member] \| Revolving Credit Facility [Member]
Short-Term Debt						$ 18,000,000	$ 43,600,000
Third Eye Capital [Member] \| Revolving Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						13.75%	20.75%
Third Eye Capital [Member] \| Acquisition Term Notes [Member]
Debt Instrument, Face Amount						$ 15,000,000
Revolving Notes Series B [Member] \| Revolving Credit Facility [Member]
Short-Term Debt							$ 100,000,000
Revolving Notes Series B [Member] \| Revolving Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate			13.75%				20.75%
Term Loan [Member] \| Third Eye Capital [Member]
Debt Instrument, Face Amount						7,200,000
Revenue Participation Term Notes [Member] \| Third Eye Capital [Member]
Debt Instrument, Face Amount						$ 10,000,000
Short-Term Debt							$ 12,200,000
Debt Instrument, Interest Rate, Stated Percentage			5.00%
Term Notes [Member] \| Third Eye Capital [Member]
Short-Term Debt											$ 7,300,000
Debt Instrument, Interest Rate, Stated Percentage						14.00%
Acquisition Term Notes [Member] \| Third Eye Capital [Member]
Short-Term Debt							19,500,000
Debt Instrument, Redemption Fee							$ 7,500,000
Acquisition Term Notes [Member] \| Third Eye Capital [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate						10.75%	17.75%
Fuels Revolving Line [Member] \| GAFI [Member]
Short-Term Debt							$ 57,300,000						$ 49,200,000
Fuels Revolving Line [Member] \| GAFI [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage							18.00%								15.00%
Fuels Revolving Line [Member] \| ACCI [Member]
Long-Term Debt, Current Maturities							$ 33,100,000						30,000,000
Debt Issuance Costs, Net							$ 0						200,000
Fuels Revolving Line [Member] \| ACCI [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage					13.00%		16.00%
Fuels Revolving Line [Member] \| Prime Rate [Member] \| GAFI [Member]
Debt Instrument, Basis Spread on Variable Rate					11.00%
Fuels Revolving Line [Member] \| Prime Rate [Member] \| ACCI [Member]
Debt Instrument, Basis Spread on Variable Rate					9.00%
Cilion Shareholder Seller Notes Payable [Member]
Debt Instrument, Face Amount						$ 5,000,000
Debt Instrument, Interest Rate, Stated Percentage						3.00%
Debt, Long-Term and Short-Term, Combined Amount							$ 7,632,000						7,463,000
Subordinated Notes [Member] \| AAFK [Member]
Short-Term Debt							22,800,000						21,600,000
Debt Issuance Costs, Net							300,000						500,000
Debt Instrument, Fee Amount																		$ 3,400,000
Debt Instrument Fee Rate																		10.00%
Debt Extension Fee, Percentage																		10.00%
EB5 Phase I Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount							35,200,000						34,900,000
Debt Instrument, Convertible, Conversion Price (in dollars per share)																	$ 30
EB-5 Promissory Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount							39,715,000						39,409,000
Proceeds from Issuance of Debt									$ 4,000,000
EB5 Phase II Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount							4,500,000
Secunderabad Oils [Member]
Debt Instrument, Interest Rate, Stated Percentage	18.00%
Debt Agreement, Maximum Borrowing Capacity												$ 3,200,000
Debt Instrument, Term (Month)	12 months
Proceeds from Issuance of Secured Debt							8,600,000
Repayments of Debt							8,600,000
India Biodiesel Factoring Arrangement [Member]
Short-Term Debt							$ 2,000,000						0
Debt Instrument, Interest Rate, Stated Percentage							8.10%
Proceeds from Issuance of Secured Debt							$ 12,900,000
Repayments of Debt							10,900,000
Construction Loan Agreement [Member]
Debt Instrument, Interest Rate, Stated Percentage				9.25%
Debt Agreement, Maximum Borrowing Capacity				$ 25,000,000
Long-Term Debt							22,900,000						24,500,000
Construction Loan Agreement [Member] \| US Treasury (UST) Interest Rate [Member]
Debt Instrument, Basis Spread on Variable Rate				5.00%
Construction Loan Agreement 2 [Member]
Debt Instrument, Interest Rate, Stated Percentage		8.75%
Debt Issuance Costs, Net							700,000						800,000
Debt Agreement, Maximum Borrowing Capacity		$ 25,000,000
Long-Term Debt							24,500,000						25,000,000
Construction Loan Agreement 2 [Member] \| US Treasury (UST) Interest Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		5.00%
Equipment Financing [Member]
Debt Instrument, Face Amount													51,000
Short-Term Debt							27,000						$ 45,000
Debt Instrument, Interest Rate, Stated Percentage													7.49%
Debt, Long-Term and Short-Term, Combined Amount							27,000						$ 45,000
Financing Agreement For Capital Expenditures [Member]
Debt Instrument, Face Amount																$ 54,500
Debt Instrument, Interest Rate, Stated Percentage																6.59%
Debt, Long-Term and Short-Term, Combined Amount							6,000						13,000
Jessup Land Acquisition Notes [Member]
Debt Instrument, Face Amount														$ 840,000
Debt Instrument, Interest Rate, Stated Percentage														11.99%
Long-Term Debt							550,000						550,000
MVRS Construction Financing Note [Member]
Short-Term Debt							$ 35,644,000						$ 17,361,000
Debt Instrument, Interest Rate, Stated Percentage							7.75%