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4. Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Total debt | $ 229,619 | $ 202,425
Less current portion of debt | 59,515 | 22,740
Total long term debt | 170,104 | 179,685
Third Eye Capital Term Notes |  |
Total debt | 7,066 | 7,024
Third Eye Capital Revolving Credit Facility |  |
Total debt | 80,310 | 62,869
Third Eye Capital Revenue Participation Term Notes |  |
Total debt | 11,864 | 11,794
Third Eye Capital Acquisition Term Notes |  |
Total debt | 26,384 | 25,518
Third Eye Capital Promissory Note |  |
Total debt | 1,444 | 2,815
Cilion Shareholder Seller Notes Payable |  |
Total debt | 6,274 | 6,124
Subordinated Notes |  |
Total debt | 12,745 | 11,502
Term Loan on Equipment Purchase |  |
Total debt | 5,652 | 0
EB-5 Promissory Notes |  |
Total debt | 43,120 | 41,932
PPP Loans |  |
Total debt | 1,134 | 0
Unsecured Working Capital Loans |  |
Total debt | 0 | 2,631
GAFI Term and Revolving Loans |  |
Total debt | $ 33,626 | $ 30,216

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