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Note 9 - Agreements - Schedule of Working Capital Agreement Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Revenues	$ 68,690	$ 71,831	$ 115,953	$ 189,781
Accounts payable	28,800		28,800		$ 26,168
J.D. Heiskell [Member]
Accounts receivable	1,008	106	1,008	106
Accounts payable	759	540	759	540
Working Capital	13	0	13	0
Ethanol Sales [Member] | J.D. Heiskell [Member]
Revenues	36,375	0	45,388	0
Wet Distiller's Grains Sales [Member] | J.D. Heiskell [Member]
Revenues	9,427	13,003	11,980	39,669
Corn Oil Sales [Member] | J.D. Heiskell [Member]
Revenues	1,487	2,917	1,613	8,067
CDS Sales [Member] | J.D. Heiskell [Member]
Revenues	9	0	62	0
Corn Purchases [Member] | J.D. Heiskell [Member]
Corn purchases	$ 37,030	$ 53,063	$ 48,029	$ 151,425

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