Note 4 - Debt- Schedule of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt, Long-Term and Short-Term, Combined Amount	$ 267,753	$ 246,240
Short-Term Debt	41,396	36,754
Less current portion of debt	62,854	49,219
Total long term debt	204,899	197,021
Third Eye Capital Term Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount	7,143	7,141
Third Eye Capital Revolving Credit Facility [Member]
Debt, Long-Term and Short-Term, Combined Amount	23,711	60,602
Revolving Notes Series B [Member]
Debt, Long-Term and Short-Term, Combined Amount	48,401
Third Eye Capital Revenue Participation Term Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount	11,961	11,963
Third Eye Capital Acquisition Term Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount	26,569	26,578
Third Eye Capital Fuels Revolving Line [Member]
Debt, Long-Term and Short-Term, Combined Amount	31,880	27,410
Third Eye Capital Carbon Revolving Line [Member]
Debt, Long-Term and Short-Term, Combined Amount	23,359	22,710
Construction Loan Agreement [Member]
Short-Term Debt	22,721	19,820
Cilion Shareholder Seller Notes Payable [Member]
Debt, Long-Term and Short-Term, Combined Amount	6,923	6,821
Subordinated Notes 1 [Member]
Short-Term Debt	16,765	15,931
EB-5 Promissory Notes [Member]
Debt, Long-Term and Short-Term, Combined Amount	41,806	41,404
Term Loan On Equipment Purchase [Member]
Debt, Long-Term and Short-Term, Combined Amount	5,854	5,860
IndusInd Bank and HDFC Bank Secured Loans [Member]
Short-Term Debt	$ 660	$ 0

Amount of debt and lease obligation, classified as current.

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