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Amounts receivable (Tables)
 12 Months Ended
Dec. 31, 2019
Trade and other receivables [abstract]  
Disclosure of detailed information about trade and other receivables [Table Text Block]
      December 31,     December 31,  
      2019     2018  
      $     $  
               
  Revenues receivable from royalty, stream and other interests   1,257     6,643  
  Interest income receivable   2,133     1,991  
  Amounts receivable from associates(i)   641     3,225  
  Sales taxes, tax credits and other receivables   2,299     462  
      6,330     12,321  
(i) Amounts receivable from associates for cost recoveries are mainly related to professional services and office rent.