Additional information on the consolidated statements of loss - Disclosure of detailed information about cost of sales (Details) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	$ 16,076	$ 37,646
Royalty interests [Member]
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	1,055	551
Stream interests [Member]
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	15,021	12,752
Offtake interests [Member]
Additional Information On Consolidated Statements Of Loss Line Items
Cost of sales	$ 0	$ 24,343

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 2022-03-24
-Paragraph 99
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_99&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 103
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_103&doctype=Standard
-URIDate 2022-03-24

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Balance Type:	debit
Period Type:	duration