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INVENTORY (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of inventories [Abstract] |
Schedule of inventory |
| December 31, 2017 |  | December 31, 2016 |
| $ |  | $ |
Current: |  |
Finished goods | 19,262 |  | 11,627 |
Stockpiled ore | 6,806 |  | 30,574 |
Leach pad inventory | 128,783 |  | 86,696 |
Materials and supplies | 27,730 |  | 26,018 |
| 182,581 |  | 154,915 |
Non-current materials and supplies (note 8) | 3,973 |  | 1,811 |
| 186,554 |  | 156,726 |

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