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Cost of revenues and general and administrative expenses
 12 Months Ended
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