| General and administrative expenses on the consolidated statements of operations consist of the following: |
| 2017 | 2016 | 2015 | ||||||||||
| Salaries and benefits | $ | 1,196,044 | $ | 1,159,264 | $ | 1,058,543 | ||||||
| Management and consulting fees | 464,122 | 924,561 | 973,499 | |||||||||
| Office and miscellaneous | 443,043 | 495,465 | 282,382 | |||||||||
| Investor relations | 365,609 | 257,973 | 179,252 | |||||||||
| Professional fees | 323,293 | 359,053 | 413,977 | |||||||||
| Travel and promotion | 246,453 | 171,877 | 195,605 | |||||||||
| Directors fees | 157,862 | 166,013 | 127,874 | |||||||||
| Regulatory and compliance fees | 101,245 | 242,656 | 51,907 | |||||||||
| Depreciation | 14,761 | 12,005 | 14,201 | |||||||||
| $ | 3,312,432 | $ | 3,788,867 | $ | 3,297,240 | |||||||