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Note 20 - Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Condensed Balance Sheet [Table Text Block] |
|  | 2023 |  |  | 2022 |
Accounts receivable |  |  |  |  |  |  |  |
Biodiesel, petrodiesel, blends and other petroleum products |  | $ | 1 |  |  | $ | 6 |
Total accounts receivable |  | $ | 1 |  |  | $ | 6 |
Prepaid expenses |  |  |  |  |  |  |  |
Administrative services and other |  | $ | 12 |  |  | $ | 12 |
Total prepaid expenses |  | $ | 12 |  |  | $ | 12 |
Accounts payable |  |  |  |  |  |  |  |
Natural gas and fuel purchases |  | $ | - |  |  | $ | 7,788 |
Travel and administrative services |  |  | 42 |  |  |  | 11 |
Total accounts payable |  | $ | 42 |  |  | $ | 7,799 |
Accrued liabilities |  |  |  |  |  |  |  |
Travel and administrative services |  | $ | - |  |  | $ | 1 |
Total accrued liabilities |  | $ | - |  |  | $ | 1 |
Condensed Income Statement [Table Text Block] |
|  | Years ended December 31: |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Revenues |  |  |  |  |  |  |  |  |  |  |  |
Biodiesel, petrodiesel, blends and other petroleum products |  | $ | 22 |  |  | $ | 459 |  |  | $ | 1,261 |
Total revenues |  | $ | 22 |  |  | $ | 459 |  |  | $ | 1,261 |
Cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |
Biodiesel, petrodiesel, blends, and other petroleum products |  | $ | - |  |  | $ | 5,425 |  |  | $ | 5,233 |
Natural gas purchases |  |  | (315 | ) |  |  | - |  |  |  | 11,360 |
Total cost of goods sold |  | $ | (315 | ) |  | $ | 5,425 |  |  | $ | 16,593 |
Distribution |  |  |  |  |  |  |  |  |  |  |  |
Distribution and related services |  | $ | 176 |  |  | $ | 174 |  |  | $ | 176 |
Total distribution |  | $ | 176 |  |  | $ | 174 |  |  | $ | 176 |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |
Commodity trading advisory fees |  | $ | 308 |  |  | $ | 307 |  |  | $ | 308 |
Travel and administrative services |  |  | 188 |  |  |  | 184 |  |  |  | 221 |
Income tax, consulting services and other |  |  | 120 |  |  |  | 120 |  |  |  | 120 |
Total selling, general, and administrative expenses |  | $ | 616 |  |  | $ | 611 |  |  | $ | 649 |

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