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Segment disclosure - Disclosure of detailed information about exploration, evaluation and development of mining projects (Detail) - CAD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Assets |  |  |
Inventories | $ 18,596 | $ 10,025 |
Mining interests, plant and equipment | 635,655 | 489,512 | $ 343,693
Exploration and evaluation assets | 3,635 | 42,519 | $ 42,949
Total assets | 2,370,622 | 2,397,104 |
Mining exploration, evaluation and development [Member] |  |  |
Assets |  |  |
Inventories | 18,596 | 27,304 |
Mining interests, plant and equipment | 559,332 | 407,000 |
Exploration and evaluation assets | 3,635 | 41,869 |
Total assets | 703,110 | 802,144 |
Canada [Member] | Mining exploration, evaluation and development [Member] |  |  |
Assets |  |  |
Inventories | 13,933 | 1,599 |
Mining interests, plant and equipment | 455,849 | 344,903 |
Exploration and evaluation assets | 3,635 | 40,680 |
Total assets | 627,937 | 704,998 |
Mexico [Member] | Mining exploration, evaluation and development [Member] |  |  |
Assets |  |  |
Inventories | 4,663 | 25,705 |
Mining interests, plant and equipment | 103,483 | 62,097 |
Exploration and evaluation assets | 0 | 1,189 |
Total assets | $ 75,173 | $ 97,146 |

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- Definition The amount of assets arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2021-01-01 -Paragraph 24 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2021-en-r&anchor=para_24_b&doctype=Standard -URIDate 2021-03-24 + Details
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