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INVENTORIES | 12 Months Ended
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Dec. 31, 2016
Inventory Disclosure [Abstract] |
Inventories | INVENTORIES
| December 31, 2016 |  | December 31, 2015
Concentrates and work-in-progress (a) | $ | 13,788 |  |  | $ | 19,900 |
Inventory of ore in stockpiles | — |  |  | 7,767 |
Raw materials and consumables | 2,973 |  |  | 3,004 |
| $ | 16,761 |  |  | $ | 30,671 |
(a) | For the year ended December 31, 2016, the Company recorded an impairment loss of $5.36 million in the statement of operations related to concentrates and work in progress inventories with $2.36 million relating to the Company's Conventional segment for the three months ended December 31, 2016 and $3.00 million related to the ISR segment for the three months ended September 30, 2016. For the years ended December 31, 2015 and 2014, the Company recorded no impairment loss related to inventories.

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- Definition The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a, b, c -Article 5 + Details
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