Quarterly report pursuant to Section 13 or 15(d)

GENERAL (Details)

v3.8.0.1
GENERAL (Details)
3 Months Ended
Mar. 31, 2018
Segment
Noncontrolling Interest [Line Items]  
Number of operating segments 2
Al Masane Al Kobra ("AMAK") [Member]  
Noncontrolling Interest [Line Items]  
Percentage of ownership 33.00%
Pioche Ely Valley Mines, Inc. ("PEVM") [Member]  
Noncontrolling Interest [Line Items]  
Percentage of ownership 55.00%