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Additional information on the consolidated statements of loss - Disclosure of detailed information about revenues (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Additional Information On Consolidated Statements Of Loss Line Items    
Revenues $ 217,809 $ 224,877
Royalty interests [Member]    
Additional Information On Consolidated Statements Of Loss Line Items    
Revenues 144,066 140,279
Stream interests [Member]    
Additional Information On Consolidated Statements Of Loss Line Items    
Revenues 73,743 59,333
Offtake interests [Member]    
Additional Information On Consolidated Statements Of Loss Line Items    
Revenues $ 0 $ 25,265