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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2017
Classes of current inventories [abstract] |
Schedule of Inventories |
|  | December 31, |  |  | December 31, |
|  | 2017 |  |  | 2016 |
Concentrates |  | $ | 1,391 |  |  | $ | 1,266 |
Ore stockpiles |  |  | 2,877 |  |  |  | 161 |
Spare parts and supplies |  |  | 5,098 |  |  |  | 5,191 |
|  | $ | 9,366 |  |  | $ | 6,618 |

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