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Corporate general and administrative expenses (Tables) | 9 Months Ended
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Sep. 30, 2018
Corporate general and administrative expenses [abstract] |
Schedule of Corporate General and Administrative Expenses | The following are components of corporate general and administrative expenses:
|  | Three-month |  |  | Three-month |  |  | Nine-month |  |  | Nine-month |
|  | period ended |  |  | period ended |  |  | period ended |  |  | period ended |
|  | September 30, |  |  | September 30, |  |  | September 30, |  |  | September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Salaries and employee benefits |  | $ | 446 |  |  | $ | 423 |  |  | $ | 1,333 |  |  | $ | 1,306 |
Directors’ fees |  |  | 95 |  |  |  | 72 |  |  |  | 241 |  |  |  | 196 |
Share-based payments |  |  | 271 |  |  |  | 521 |  |  |  | 1,609 |  |  |  | 1,568 |
Professional fees |  |  | 479 |  |  |  | 102 |  |  |  | 851 |  |  |  | 511 |
Office and general |  |  | 368 |  |  |  | 397 |  |  |  | 1,193 |  |  |  | 1,196 |
|  | $ | 1,659 |  |  | $ | 1,515 |  |  | $ | 5,227 |  |  | $ | 4,777 |

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