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4. Debt (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Interest payments			$ 2,518	$ 356
Third Eye Capital Term Notes
Principal and interest outstanding	$ 6,500		6,500
Unamortized discount	200		200
Third Eye Capital Revolving Credit Facility
Principal and interest outstanding	32,500		32,500
Unamortized debt issuance costs	1,000		1,000
Third Eye Capital Revenue Participation Term Note
Principal and interest outstanding	10,800		10,800
Unamortized discount	400		400
Third Eye Capital Acquisition Term Notes
Principal and interest outstanding	18,800		18,800
Unamortized discount	600		600
Cilion shareholder Seller notes payable
Principal and interest outstanding	5,600		5,600
State Bank of India secured term loan
Principal and interest outstanding	3,200		3,200
Subordinated Notes
Principal and interest outstanding	7,100		7,100		$ 6,300
EB-5 long-term promissory notes
Principal and interest outstanding	25,800		25,800
Unsecured working capital loans
Principal and interest outstanding	400		400		$ 0
Principal and interest payments made	$ 2,400	$ 3,600	$ 4,500	$ 3,500

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