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Additional information on the consolidated statements of income (loss) - Disclosure of detailed information about revenues (Details) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Additional Information On Consolidated Statements Of Loss Line Items    
Royalty, stream and other interest revenue $ 224,877 $ 213,630
Royalty interests [Member]    
Additional Information On Consolidated Statements Of Loss Line Items    
Royalty, stream and other interest revenue 140,279 111,305
Stream interests [Member]    
Additional Information On Consolidated Statements Of Loss Line Items    
Royalty, stream and other interest revenue 59,333 45,269
Offtake interests [Member]    
Additional Information On Consolidated Statements Of Loss Line Items    
Royalty, stream and other interest revenue $ 25,265 $ 57,056