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PLANT AND EQUIPMENT AND MINERAL PROPERTIES (Narrative) (Details) - Roca Honda [Member] - USD ($) $ in Thousands	1 Months Ended
	May 31, 2016	May 27, 2016
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	1,212,173
Business Acquisition, Percentage of Voting Interests Acquired		40.00%
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 2,680
Business Combination, Consideration Transferred, Liabilities Incurred	$ 4,500

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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
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