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ACCRUED EXPENSES (Tables) | 3 Months Ended
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Mar. 31, 2016
Payables and Accruals [Abstract] |
Schedule of accrued expenses | Accrued expenses consisted of the following:
| March 31, 2016 |  | December 31, 2015
Inventory-related accruals | $ | 583,287 |  |  | $ | 548,800 |
Inventory supply and intermediation arrangements | 274,668 |  |  | 252,380 |
Accrued transportation costs | 87,972 |  |  | 91,546 |
Renewable energy credit obligations | 45,729 |  |  | 19,472 |
Excise and sales tax payable | 41,110 |  |  | 34,129 |
Accrued interest | 30,558 |  |  | 24,806 |
Accrued utilities | 24,780 |  |  | 25,192 |
Customer deposits | 26,656 |  |  | 20,395 |
Accrued salaries and benefits | 12,290 |  |  | 61,011 |
Accrued construction in progress | 6,709 |  |  | 7,400 |
Other | 10,847 |  |  | 34,058 |
Total accrued expenses | $ | 1,144,606 |  |  | $ | 1,119,189 |

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