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4. Debt (Details Narrative) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Cilion shareholder Seller note payable
Principal and interest outstanding	$ 6,000	$ 5,800
Third Eye Capital Term Notes
Principal and interest outstanding	7,000	6,900
Third Eye Capital Revolving Credit Facility
Principal and interest outstanding	47,200	35,400
Third Eye Capital Revenue Participation Term Notes
Principal and interest outstanding	11,800	11,600
Third Eye Capital Acquisition Term Notes
Principal and interest outstanding	23,800	20,000
Subordinated Notes
Principal and interest outstanding	10,100	8,700
EB-5 promissory notes
Principal outstanding	35,000	34,500
Interest outstanding	2,000	1,500
Secunderabad Oils
Principal and interest outstanding	$ 300	$ 1,300

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