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Income Taxes - Summary of Deferred Tax (Assets) and Liabilities (Detail) - CAD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | $ 0 | $ 867 | $ 2,536
Exploration and evaluation assets [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 46,658 | 39,120 |
Convertible debentures [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 1,559 | 66 |
Non-capital losses [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | (73,070) | (38,333) |
Investment in associate [Member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 24,853 | 0 |
Share issuance costs [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 0 | (208) |
Equipment [member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Net deferred tax liabilities | 0 | (79) |
Marketable Securities [Member] |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Marketable securities | $ 0 | $ 301 |

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- Definition The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 12 -IssueDate 2023-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2023-03-23 + Details
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