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INCOME TAXES (Tables)
 12 Months Ended
Dec. 31, 2020
Major components of tax expense (income) [abstract]  
Disclosure of detailed information about deferred taxes [Table Text Block]
    December 31, 2020     December 31, 2019  
Royalty interest $ (1,718 ) $ (1,385 )
Tax loss carryforwards   1,828     3,377  
Other   (110 )   115  
Total $ —   $ 2,107  
Disclosure of detailed information about temporary difference, unused tax losses and unused tax credits [Table Text Block]
    December 31, 2020     December 31, 2019     Expiry Date Range  
Tax loss carryforwards $ 60,699   $ 55,849     2026-2040  
Exploration and evaluation assets   4,094     410     No expiry  
Other   1,557     1,482     No expiry  
Disclosure of detailed information about income tax expense [Table Text Block]
    December 31, 2020     December 31, 2019  
Current tax expense $ 506   $ —  

Deferred tax expense (recovery)

   2,113     (415 )
  $ 2,619   $ (415 )
Disclosure of detailed information about effective income tax expense (recovery) [Table Text Block]
    December 31, 2020     December 31, 2019  

Expected income tax recovery

 $ (914 ) $ (3,844 )
Effect of lower tax rates in foreign jurisdictions   31     942  
Permanent differences   876     898  
Change in unrecognized deductible temporary differences and other   2,552     1,191  
Foreign exchange   74     398  
Total $ 2,619   $ (415 )