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11. Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
11. Agreements (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other1
Ethanol sales	$ 26,049	$ 114,593
Wet distiller's grains sales	32,049	34,510
Corn oil sales	3,623	3,536
Corn purchases	107,033	119,786
Accounts receivable	94	554
Accounts payable	$ 169	$ 2,027