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1. Nature of Activities and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Sales	$ 40,923	$ 57,389	$ 128,227	$ 149,896
North America
Sales	33,131	37,820	114,226	113,942
North America | Ethanol and high-grade alcohol sales
Sales	24,825	27,456	86,387	84,453
North America | Wet distiller's grains sales
Sales	7,143	8,783	22,983	26,119
North America | Other sales
Sales	1,163	1,581	4,856	3,370
India
Sales	7,792	19,569	14,001	35,954
India | Other sales
Sales	18	1,561	51	1,567
India | Biodiesel sales
Sales	7,325	17,057	12,267	32,201
India | Refined Glycerin sales
Sales	449	951	909	2,186
India | PFAD sales
Sales	$ 0	$ 0	$ 774	$ 0

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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