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INVENTORIES (Tables) | 12 Months Ended
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Dec. 31, 2016
Inventory Disclosure [Abstract] |
Schedule of Inventory, Current |
| 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.

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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