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Royalty, stream and other interests - Disclosure of detailed information about royalty interests (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | $ 1,116,128 | $ 1,130,512
Additions | 90,936 | 66,193
Conversion of an offtake into a stream | 0 |
Disposal |  | (357)
Depletion | (48,361) | (45,605)
Impairment | (2,288) | (26,300)
Translation adjustments | (1,614) | (8,315)
Net book value - December 31 | 1,154,801 | 1,116,128
Royalty interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 656,661 | 627,567
Additions | 77,702 | 54,276
Conversion of an offtake into a stream | 0 |
Disposal |  | (357)
Depletion | (28,958) | (23,159)
Impairment | (2,288) | 0
Translation adjustments | (4) | (1,666)
Net book value - December 31 | 703,113 | 656,661
Stream interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 440,941 | 483,164
Additions | 13,234 | 11,917
Conversion of an offtake into a stream | 4,682 |
Disposal |  | 0
Depletion | (19,403) | (21,532)
Impairment | 0 | (26,300)
Translation adjustments | (1,422) | (6,308)
Net book value - December 31 | 438,032 | 440,941
Offtake interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 18,526 | 19,781
Additions | 0 | 0
Conversion of an offtake into a stream | (4,682) |
Disposal |  | 0
Depletion | 0 | (914)
Impairment | 0 | 0
Translation adjustments | (188) | (341)
Net book value - December 31 | 13,656 | 18,526
Producing [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 582,822 |
Cost | 1,145,279 | 1,151,944
Accumulated depletion and impairment | (606,758) | (569,122)
Net book value - December 31 | 538,521 | 582,822
Producing [Member] | Royalty interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 254,271 |
Cost | 626,345 | 621,503
Accumulated depletion and impairment | (395,874) | (367,232)
Net book value - December 31 | 230,471 | 254,271
Producing [Member] | Stream interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 323,738 |
Cost | 518,934 | 512,019
Accumulated depletion and impairment | (210,884) | (188,281)
Net book value - December 31 | 308,050 | 323,738
Producing [Member] | Offtake interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 4,813 |
Cost | 0 | 18,422
Accumulated depletion and impairment | 0 | (13,609)
Net book value - December 31 | 0 | 4,813
Development [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 306,587 |
Cost | 438,767 | 385,070
Accumulated depletion and impairment | (78,223) | (78,483)
Net book value - December 31 | 360,544 | 306,587
Development [Member] | Royalty interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 184,669 |
Cost | 226,438 | 185,170
Accumulated depletion and impairment | (572) | (501)
Net book value - December 31 | 225,866 | 184,669
Development [Member] | Stream interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 117,203 |
Cost | 181,209 | 168,648
Accumulated depletion and impairment | (51,227) | (51,445)
Net book value - December 31 | 129,982 | 117,203
Development [Member] | Offtake interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 4,715 |
Cost | 31,120 | 31,252
Accumulated depletion and impairment | (26,424) | (26,537)
Net book value - December 31 | 4,696 | 4,715
Exploration and evaluation |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 226,719 |
Cost | 256,640 | 227,393
Accumulated depletion | (904) | (674)
Net book value - December 31 | 255,736 | 226,719
Exploration and evaluation | Royalty interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 217,721 |
Cost | 247,680 | 218,395
Accumulated depletion | (904) | (674)
Net book value - December 31 | 246,776 | 217,721
Exploration and evaluation | Stream interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 0 |
Cost | 0 | 0
Accumulated depletion | 0 | 0
Net book value - December 31 | 0 | 0
Exploration and evaluation | Offtake interests [Member] |  |
Royalty, Stream And Other Interests [Line Items] |  |
Beginning balance | 8,998 |
Cost | 8,960 | 8,998
Accumulated depletion | 0 | 0
Net book value - December 31 | $ 8,960 | $ 8,998

X
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