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INVENTORY (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of inventories [Abstract] |
Schedule of inventory |
| December 31, 2018 |  | December 31, 2017 |
| $ |  | $ |
Current: |  |
Finished goods | 23,433 |  | 19,262 |
Stockpiled ore | 18,195 |  | 6,806 |
Leach pad inventory | 162,335 |  | 128,783 |
Materials and supplies | 28,785 |  | 27,730 |
| 232,748 |  | 182,581 |
Non-current materials and supplies (note 8) | 2,006 |  | 3,973 |
| 234,754 |  | 186,554 |

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