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6. Variable Interest Entity (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Current assets: |  |  |  |
Cash and cash equivalents | $ 428 | $ 1,188 | $ 428 | $ 1,486
Prepaid expenses | 2,435 | 942 | 2,435 |
Other assets | 643 | 956 | 643 |
Total current assets | 11,462 | 10,311 | 11,462 |
Property, plant and equipment, net | 78,837 | 78,492 | 78,837 |
Total assets | 94,331 | 91,821 | 94,331 |
Liabilities and stockholder's deficit |  |  |  |
Accumulated deficit | (160,188) | (193,204) | (160,188) |
Total liabilities and stockholder's deficit | 94,331 | 91,821 | 94,331 |
Selling, general and administrative expenses |  | 16,085 | 13,191 |
Operating loss |  | (10,926) | (12,183) |
Interest expense |  |  |  |
Interest rate expense |  | 25,690 | 19,304 |
Other income |  | (1,245) | 277 |
Net loss |  | (36,287) | (31,770) |
GAFI |  |  |  |
Current assets: |  |  |  |
Cash and cash equivalents | 184 | 17 | 184 |
Prepaid expenses | 1,581 | 215 | 1,581 |
Other assets | 0 | 103 | 0 |
Total current assets | 1,765 | 335 | 1,765 |
Property, plant and equipment, net | 15,408 | 15,408 | 15,408 |
Promissory note receivable from Aemetis | 5,709 | 6,182 | 5,709 |
Total assets | 22,882 | 21,925 | 22,882 |
Liabilities and stockholder's deficit |  |  |  |
Other accrued liabilities | 0 | 44 | 0 |
Secured and Revolving notes | 24,351 | 26,621 | 24,351 |
Total liabilities | 24,351 | 26,665 | 24,351 |
Accumulated deficit | (1,469) | (4,740) | (1,469) |
Total liabilities and stockholder's deficit | 22,882 | 21,925 | $ 22,882 |
Selling, general and administrative expenses | 260 | 455 |  |
Operating loss | (260) | (455) |  |
Interest expense |  |  |  |
Interest rate expense | 1,249 | 2,865 |  |
Debt related fees and amortization expense | 250 | 690 |  |
Other income | (290) | (739) |  |
Net loss | $ (1,469) | $ (3,271) |  |

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