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1. Nature of Activities and Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2019
Accounting Policies [Abstract] |
Disaggregation of revenue |
North America (in thousands) |  |  |  |  |  |  |  |  |  |
|  | For the three months ended September 30, |  |  | For the nine months ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Ethanol sales |  | $ | 27,456 |  |  | $ | 29,661 |  |  | $ | 84,453 |  |  | $ | 88,002 |
Wet distiller's grains sales |  |  | 8,783 |  |  |  | 8,116 |  |  |  | 26,119 |  |  |  | 24,443 |
Other sales |  |  | 1,581 |  |  |  | 799 |  |  |  | 3,370 |  |  |  | 2,935 |
|  | $ | 37,820 |  |  | $ | 38,576 |  |  | $ | 113,942 |  |  | $ | 115,380 |
India (in thousands) |  |  |  |  |  |  |  |  |  |  |  |
|  | For the three months ended September 30, |  |  | For the nine months ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Biodiesel sales |  | $ | 17,057 |  |  | $ | 5,206 |  |  | $ | 32,201 |  |  | $ | 13,548 |
Refined Glycerin sales |  |  | 951 |  |  |  | 853 |  |  |  | 2,186 |  |  |  | 3,753 |
Other sales |  |  | 1,561 |  |  |  | - |  |  |  | 1,567 |  |  |  | - |
|  | $ | 19,569 |  |  | $ | 6,059 |  |  | $ | 35,954 |  |  | $ | 17,301 |
Schedule of dilutive securities |
|  | As of |
|  | September 30, 2019 |  |  | September 30, 2018 |
Series B preferred (post split basis) |  |  | 132 |  |  |  | 132 |
Common stock options and warrants |  |  | 3,910 |  |  |  | 2,990 |
Debt with conversion feature at $30 per share of common stock |  |  | 1,255 |  |  |  | 1,228 |
SARs conversion if stock issued at $1.11 per share to cover $2.1 million |  |  | - |  |  |  | 1,893 |
Total number of potentially dilutive shares excluded from the diluted net loss per share calculation |  |  | 5,297 |  |  |  | 6,243 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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