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Segment disclosure - Disclosure of detailed information about geographical revenues segment reporting (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of operating segments [line items] |  |
Revenues | $ 217,809 | $ 224,877
Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 144,066 | 140,279
Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 73,743 | 59,333
Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 0 | 25,265
North America [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 180,189 | 187,433
North America [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 140,488 | 134,544
North America [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 39,701 | 27,624
North America [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues |  | 25,265
South America [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 25,205 | 21,396
South America [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 1,257 | 1,112
South America [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 23,948 | 20,284
South America [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues |  | 0
Australia [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 961 | 1,554
Australia [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 69 | 6
Australia [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 892 | 1,548
Australia [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues |  | 0
Africa [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 2,252 | 4,617
Africa [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 2,252 | 4,617
Africa [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 0 | 0
Africa [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues |  | 0
Europe [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 9,202 | 9,877
Europe [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | 0 | 0
Europe [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues | $ 9,202 | 9,877
Europe [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Revenues |  | $ 0

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