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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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