Additional information on the consolidated statements of income (loss) - Disclosure of detailed information about cost of sales (Details) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	$ 37,646	$ 63,700
Royalty interests [Member]
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	551	512
Stream interests [Member]
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	12,752	8,988
Offtake interests [Member]
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	$ 24,343	$ 54,200

The amount of all expenses directly or indirectly attributed to the goods or services sold. Attributed expenses include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, such as depreciation and maintenance of factory buildings and equipment used in the production process, unallocated production overheads, and abnormal amounts of production costs of inventories.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 99
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_99&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 103
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_103&doctype=Standard
-URIDate 2021-03-24

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