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LONG-TERM INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2019
Long-term Investments  
Schedule of long-term investments

   

Fair Value

December 31,

     Net Additions     Movements in foreign     Fair value adjustments    

Fair Value

December 31,

  
    2018     (Disposals)     exchange     for the year     2019  
Talisker Resources Common Shares   $ -     $ 2,243     $ 63     $ 891     $ 3,197  
Talisker Resources Warrants     -       716       21       377       1,114  
Other long-term investments     10       (24 )     -       14       -  
    $ 10     $ 2,935     $ 84     $ 1,282     $ 4,311