Quarterly report pursuant to Section 13 or 15(d)

GENERAL (Details)

v3.5.0.2
GENERAL (Details)
6 Months Ended
Jun. 30, 2016
Segment
Noncontrolling Interest [Line Items]  
Number of operating segments 2
AMAK [Member]  
Noncontrolling Interest [Line Items]  
Percentage of ownership 35.00%
Pioche Ely Valley Mines, Inc. ("PEVM") [Member]  
Noncontrolling Interest [Line Items]  
Percentage of ownership 55.00%