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Note 9 - Agreements - Schedule of Working Capital Agreement Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Revenues	$ 2,151	$ 52,049
Accounts payable	28,508		$ 26,168
J.D. Heiskell [Member]
Accounts receivable	0	116
Accounts payable	0	508
Wet Distiller's Grains Sales [Member] | J.D. Heiskell [Member]
Revenues	0	11,517
Corn Oil Sales [Member] | J.D. Heiskell [Member]
Revenues	37	2,338
Corn Purchases [Member] | J.D. Heiskell [Member]
Corn purchases	$ 302	$ 44,009

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