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SHAREHOLDERS' EQUITY (Details)
$ / shares in Units, $ in Thousands
 6 Months Ended
Jun. 18, 2015
$ / shares
Jun. 30, 2015
USD ($)
item
$ / shares
shares
Jun. 30, 2014
USD ($)
shares
Jul. 31, 2015
$ / shares
Dec. 31, 2014
shares
Exchangeable shares converted into common stock   1,400,000 1,200,000    
Exchangeable, shares outstanding   27,100,000     28,500,000
Common stock issued   273,381,000     271,579,000
Proceed from exercised stock options | $     $ 129    
Number of mining contractors with which the entity has entered into an agreement | item   1      
Fair Value of common stock at issuance | $   $ 443      
Common Stock          
Common stock issued   0      
Shares of common stock issued upon exercise of stock options     61,000    
Weighted average exercise price of stock options (in dollars per share) | $ / shares   $ 2.14      
Shares issued for settlement of accounts payable (in shares)   430,295      
Annual return of capital declared (in dollars per share) | $ / shares $ 0.01        
First semi-annual return of capital payable (in dollars per share) | $ / shares       $ 0.005  
Fair Value of common stock at issuance | $   $ 443