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DISCONTINUED OPERATIONS (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Assets retained by the Company:    
Performance bonds $ 114 $ 530
Net assets conveyed to Purchaser:    
Undeveloped mining claims 21,942 21,942
Mining equipment 1,774 1,773
Less accumulated depreciation of mining equipment (892) $ (770)
Less write-down due to impairment (22,620)
Net book value of assets conveyed 204 $ 22,945
Total assets of discontinued operations 318 23,475
Asset retirement obligations assumed by Purchaser $ 204 $ 188