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Note 5 - Debt (Details Textual) - USD ($)						3 Months Ended		24 Months Ended
Note 5 - Debt (Details Textual) - USD ($)	Jul. 28, 2023	May 16, 2023	Oct. 04, 2022	Mar. 02, 2022	Jul. 06, 2012	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2019	Jan. 01, 2025	Dec. 31, 2024	Nov. 30, 2024	Aug. 01, 2022	Jul. 26, 2022	Feb. 27, 2019	Jan. 09, 2012
Short-Term Debt						$ 25,878,000				$ 26,789,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)						$ 11.7				$ 11.7
Warrants and Rights Outstanding, Term (Year)						4 years 6 months 14 days				4 years 9 months 10 days
Proceeds from Issuance of Debt						$ 3,800,000	$ 6,223,000
Debt, Long-Term and Short-Term, Combined Amount						$ 336,291,000				$ 338,061,000
AAFK [Member] \| Warrants in Connection With Subordinated Notes [Member]
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]
Debt Instrument, Face Amount					$ 18,000,000
Debt Instrument, Interest Rate, Stated Percentage						21.25%
Long-Term Debt						$ 27,900,000
Debt Issuance Costs, Net						$ 400,000
Third Eye Capital [Member] \| Revolving Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate					13.75%
Third Eye Capital [Member] \| Acquisition Term Notes [Member]
Debt Instrument, Face Amount					$ 15,000,000
Revolving Notes Series B [Member] \| Revolving Credit Facility [Member]
Debt Instrument, Interest Rate, Stated Percentage						21.25%
Long-Term Debt						$ 73,000,000
Debt Issuance Costs, Net						1,000,000
Revolving Notes Series B [Member] \| Revolving Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		13.75%
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
Debt Instrument, Interest Rate, Stated Percentage		5.00%
Long-Term Debt						12,300,000
Debt Issuance Costs, Net						112,800
Term Notes [Member] \| Third Eye Capital [Member]
Debt Instrument, Interest Rate, Stated Percentage					14.00%
Long-Term Debt						7,300,000
Debt Issuance Costs, Net						$ 67,500
Acquisition Term Notes [Member] \| Third Eye Capital [Member]
Debt Instrument, Interest Rate, Stated Percentage						18.25%
Long-Term Debt						$ 27,100,000
Debt Issuance Costs, Net						262,500
Acquisition Term Notes [Member] \| Third Eye Capital [Member] \| Aemetis Facility Keyes, Inc. [Member]
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%
Fuels Revolving Line [Member] \| GAFI [Member]
Short-Term Debt						42,900,000
Fuels Revolving Line [Member] \| GAFI [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage				10.00%
Fuels Revolving Line [Member] \| Prime Rate [Member] \| GAFI [Member]
Debt Instrument, Basis Spread on Variable Rate				6.00%
Carbon Revolving Line [Member] \| ACCI [Member]
Debt Issuance Costs, Net						900,000
Short-Term Debt						27,500,000
Carbon Revolving Line [Member] \| ACCI [Member] \| Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage				8.00%
Carbon Revolving Line [Member] \| Prime Rate [Member] \| ACCI [Member]
Debt Instrument, Basis Spread on Variable Rate				4.00%
Cilion Shareholder Seller Notes Payable [Member]
Debt Instrument, Face Amount					$ 5,000,000
Debt Instrument, Interest Rate, Stated Percentage					3.00%
Long-Term Debt						7,296,000				7,242,000
Subordinated Notes [Member] \| AAFK [Member]
Debt Issuance Costs, Net						300,000
Short-Term Debt						20,000,000				19,400,000
Debt Instrument, Fee Amount															$ 3,400,000
Debt Instrument Fee Rate															10.00%
Debt Extension Fee, Percentage															10.00%
EB5 Phase I Notes [Member]
Short-Term Debt						34,700,000				34,600,000
Debt Instrument, Convertible, Conversion Price (in dollars per share)														$ 30
EB-5 Promissory Notes [Member]
Proceeds from Issuance of Debt								$ 4,000,000
Debt, Long-Term and Short-Term, Combined Amount						39,115,000				41,615,000
EB5 Phase II Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount						4,400,000				4,400,000
Secunderabad Oils [Member]
Debt Instrument, Interest Rate, Stated Percentage													18.00%
Long-Term Debt						4,000,000				5,100,000
Debt Agreement, Maximum Borrowing Capacity													$ 3,600,000
Leo Edibles & Fats Limited [Member]
Debt Agreement, Maximum Borrowing Capacity												$ 1,270,000
Construction Loan Agreement [Member]
Debt Instrument, Interest Rate, Stated Percentage			9.25%
Long-Term Debt						24,900,000				25,100,000
Debt, Long-Term and Short-Term, Combined Amount						48,096,000				48,235,000
Debt Agreement, Maximum Borrowing Capacity			$ 25,000,000
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%
Long-Term Debt						23,900,000				23,900,000
Debt Issuance Costs, Net						800,000				800,000
Debt Agreement, Maximum Borrowing Capacity	$ 25,000,000
Construction Loan Agreement 2 [Member] \| US Treasury (UST) Interest Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	5.00%
Jessup Land Acquisition Notes [Member]
Debt Instrument, Face Amount											$ 840,000
Debt Instrument, Interest Rate, Stated Percentage											11.99%
Long-Term Debt						$ 740,000				$ 840,000