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4. Debt (Details Narrative) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cilion shareholder Seller note payable
Principal and interest outstanding	$ 5,800
Third Eye Capital Term Notes
Principal and interest outstanding	6,900
Third Eye Capital Revolving Credit Facility
Principal and interest outstanding	35,400
Third Eye Capital Revenue Participation Term Notes
Principal and interest outstanding	11,600
Third Eye Capital Acquisition Term Notes
Principal and interest outstanding	20,000
Subordinated Notes
Principal and interest outstanding	8,700	$ 7,600
EB-5 long-term promissory notes
Principal Outstanding	34,500
Interest Outstanding	1,500
Secunderabad Oils
Principal and interest outstanding	$ 1,300	$ 300

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