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4. Debt (Details Narrative) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Third Eye Capital Term Notes
Principal and interest outstanding	$ 7,000
Third Eye Capital Revolving Credit Facility
Principal and interest outstanding	43,800
Third Eye Capital Revenue Participation Term Note
Principal and interest outstanding	11,800
Third Eye Capital Acquisition Term Notes
Principal and interest outstanding	23,700
Cilion shareholder Seller notes payable
Principal and interest outstanding	5,900
Subordinated Notes
Principal and interest outstanding	9,600		$ 8,700
EB-5 long-term promissory notes
Principal and interest outstanding	35,000
Outstanding accrued interest	1,800
Unsecured working capital loans
Principal and interest outstanding	1,100		1,300
Principal and interest payments made	3,000	$ 2,300
Unsecured working capital loans - Gemini
Principal and interest outstanding	4,700		$ 3,500
Principal and interest payments made	$ 10,400	$ 6,200

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585

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