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INVENTORIES | 12 Months Ended
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Dec. 31, 2018
Inventory Disclosure [Abstract] |
Inventories | INVENTORIES
| December 31, 2018 |  | December 31, 2017
Concentrates and work-in-progress (a) | $ | 14,746 |  |  | $ | 14,118 |
Inventory of ore in stockpiles | 883 |  |  | — |
Raw materials and consumables | 2,693 |  |  | 2,432 |
| $ | 18,322 |  |  | $ | 16,550 |
Inventories - by duration |  |  |
Current | $ | 16,550 |  |  | $ | 16,550 |
Long term - raw materials and consumables | $ | 1,772 |  |  | $ | — |
| $ | 18,322 |  |  | $ | 16,550 |
(a) | For the year ended December 31, 2018, the Company recorded an impairment loss of $4.58 million in the statement of operations related to concentrates and work in progress inventories (December 31, 2017 - $3.31 million).

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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