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Cost of revenues and general and administrative expenses | 12 Months Ended
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Dec. 31, 2017
Cost of revenues and general and administrative expenses [Abstract] |
Cost of revenues and general and administrative expenses [Text Block] | 17. Cost of revenues and general and administrative expenses
|  | Year Ended December 31, |
|  | 2017 |  | 2016 |  | 2015 |
Cost of revenues consist of: |  |  |  |  |  |  |  |  |  |
Electricity |  | $ | 9,832,128 |  | $ | 9,037,347 |  | $ | 10,675,287 |
Depreciation |  |  | 5,666,394 |  |  | 5,355,529 |  |  | 5,270,454 |
Fuel oil |  |  | 5,183,186 |  |  | 4,210,542 |  |  | 4,974,421 |
Employee costs |  |  | 5,666,972 |  |  | 5,541,983 |  |  | 4,287,783 |
Cost of plant sales |  |  | - |  |  | 142,151 |  |  | 878,396 |
Maintenance |  |  | 2,613,573 |  |  | 3,545,265 |  |  | 3,436,736 |
Retail license royalties |  |  | 1,537,879 |  |  | 1,528,914 |  |  | 1,427,073 |
Insurance |  |  | 944,975 |  |  | 992,374 |  |  | 1,187,097 |
Materials |  |  | 2,910,514 |  |  | 1,280,794 |  |  | - |
Other |  |  | 2,516,544 |  |  | 1,989,922 |  |  | 1,670,735 |
|  | $ | 36,872,165 |  | $ | 33,624,821 |  | $ | 33,807,982 |
General and administrative expenses consist of: |  |  |  |  |  |  |  |  |  |
Employee costs |  | $ | 8,118,231 |  | $ | 7,598,829 |  | $ | 6,841,274 |
Insurance |  |  | 761,115 |  |  | 782,013 |  |  | 802,386 |
Professional fees |  |  | 1,362,332 |  |  | 1,101,938 |  |  | 941,193 |
Directors’ fees and expenses |  |  | 814,208 |  |  | 774,769 |  |  | 754,145 |
Depreciation |  |  | 167,135 |  |  | 384,045 |  |  | 218,032 |
NSC project expenses |  |  | 3,011,710 |  |  | 3,011,989 |  |  | 1,976,408 |
Amortization of intangibles |  |  | 1,363,849 |  |  | 1,410,143 |  |  | 89,896 |
Other |  |  | 3,474,399 |  |  | 3,613,858 |  |  | 3,216,822 |
|  | $ | 19,072,979 |  | $ | 18,677,584 |  | $ | 14,840,156 |

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