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4. Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Total debt | $ 199,415 | $ 229,619
Less current portion of debt | 25,407 | 59,515
Total long term debt | 174,008 | 170,104
Third Eye Capital Term Notes |  |
Total debt | 7,095 | 7,066
Third Eye Capital Revolving Credit Facility |  |
Total debt | 85,105 | 80,310
Third Eye Capital Revenue Participation Term Notes |  |
Total debt | 11,913 | 11,864
Third Eye Capital Acquisition Term Notes |  |
Total debt | 26,463 | 26,384
Third Eye Capital Promissory Note |  |
Total debt | 0 | 1,444
Cilion Shareholder Seller Notes Payable |  |
Total debt | 6,311 | 6,274
Subordinated Notes |  |
Total debt | 12,973 | 12,745
Term Loan on Equipment Purchase |  |
Total debt | 5,652 | 5,652
EB-5 Promissory Notes |  |
Total debt | 42,769 | 43,120
PPP Loans |  |
Total debt | 1,134 | 1,134
GAFI Term and Revolving Loans |  |
Total debt | $ 0 | $ 33,626

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