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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2018
Inventories [Abstract] |
Schedule of current inventories |
|  | 2018 |  |  | 2017 |
|  | $ |  |  | $ |
Gold and silver bullion |  | 35,052 |  |  | 47,916 |
In-process inventory |  | 16,345 |  |  | 11,464 |
Ore stock-pile inventory |  | 58,546 |  |  | 55,498 |
Materials and supplies |  | 124,028 |  |  | 91,567 |
|  | 233,971 |  |  | 206,445 |

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