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OTHER (EXPENSES) INCOME (Tables) | 12 Months Ended
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Dec. 31, 2018
Analysis of income and expense [abstract] |
Other income (expenses) |
Years ended December 31 | 2018 |  | 2017 |
| $ |  | $ |
Loss on disposal of plant and equipment | (5,344 | ) | (3,068 | )
Expense related to the premium paid for shares over the prevailing market price | (2,782 | ) | — |
Write-down of mineral properties | — |  | (906 | )
Royalty income | — |  | 1,417 |
Other | (1,023 | ) | (510 | )
| (9,149 | ) | (3,067 | )

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