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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, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Sales | $ 57,389 | $ 44,635 | $ 149,896 | $ 132,681
North America |  |  |  |
Sales | 37,820 | 38,576 | 113,942 | 115,380
North America | Ethanol sales |  |  |  |
Sales | 27,456 | 29,661 | 84,453 | 88,002
North America | Wet distiller's grains sales |  |  |  |
Sales | 8,783 | 8,116 | 26,119 | 24,443
North America | Other sales |  |  |  |
Sales | 1,581 | 799 | 3,370 | 2,935
India |  |  |  |
Sales | 19,569 | 6,059 | 35,954 | 17,301
India | Other sales |  |  |  |
Sales | 1,561 | 0 | 1,567 | 0
India | Biodiesel sales |  |  |  |
Sales | 17,057 | 5,206 | 32,201 | 13,548
India | Refined Glycerin sales |  |  |  |
Sales | $ 951 | $ 853 | $ 2,186 | $ 3,753

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