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4. Debt (Tables)
 3 Months Ended
Mar. 31, 2018
Disclosure 4.Notes Payable Tables Abstract  
Schedule of Notes Payable
   

March 31,

2018

    

December 31,

2017

  
Third Eye Capital term notes   $ 7,024     $ 6,931  
Third Eye Capital revolving credit facility     38,523       35,371  
Third Eye Capital revenue participation term notes     11,794       11,636  
Third Eye Capital acquisition term notes     23,352       20,048  
Third Eye Capital promissory note     2,287       -  
Cilion shareholder seller notes payable     5,861       5,824  
Subordinated notes     9,016       8,725  
EB-5 long term promissory notes     36,247       36,039  
Unsecured working capital loans     3,606       4,861  
GAFI Term and Revolving loans     24,480       24,351  
Total debt     162,190       153,786  
Less current portion of debt     35,156       15,625  
Total long term debt   $ 127,034     $ 138,161  
Maturities of Long-term Debt
Twelve months ended Mar 31,   Debt Repayments  
2019   $ 35,156  
2020     29,605  
2021     95,386  
2022     4,000  
2023     111  
Total debt     164,258  
Discounts     (2,068 )
Total debt, net of discounts   $ 162,190