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1. Nature of Activities and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Disaggregation of revenue

North America (in thousands)
		For the year ended December 31,
		2018				2017
Ethanol sales		$	113,855			$	106,419
Wet distiller's grains sales			32,362				26,422
Other sales			3,828				3,898
		$	150,045			$	136,739

India (in thousands)
		For the year ended December 31,
		2018				2017
Biodiesel sales		$	17,009			$	10,365
Refined Glycerin sales			4,467				3,053
Other sales			5				-
		$	21,481			$	13,418

Schedule of dilutive securities

		As of
		December 31, 2018				December 31, 2017
Series B preferred (post split basis)			132				132
Common stock options and warrants			2,984				2,519
Debt with conversion feature at $30 per share of common stock			1,236				1,201
SARs conversion if stock issued at $0.71 per share to cover $2.1 million			2,964				-
Total number of potentially dilutive shares excluded from the diluted net loss per share calculation			7,316				3,852

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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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

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