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Share Capital - Additional Information (Detail) $ / shares in Units, $ in Thousands, $ in Thousands |  |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 11, 2023 CAD ($) shares | Dec. 09, 2023 CAD ($) $ / shares shares | Sep. 28, 2023 CAD ($) shares | Sep. 22, 2023 CAD ($) shares | Sep. 22, 2023 USD ($) shares | Jun. 09, 2023 CAD ($) shares | Dec. 09, 2022 CAD ($) shares | Jun. 10, 2022 CAD ($) shares | Dec. 31, 2023 CAD ($) shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 CAD ($) shares | Jan. 06, 2023 CAD ($)
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Stock Options Exercised | shares |  |  |  |  |  |  |  |  | 8,608,816 | 8,608,816 |  |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | $ 26,349 |  |  |
Options exercised, shares | shares |  |  |  |  |  |  |  |  |  |  | 3,247,332 |
Exercise of options |  |  |  |  |  |  |  |  | (26,349) |  | $ (10,001) |
Common shares issued | shares | 113,803 |  |  |  |  | 46,038 | 42,328 | 42,252 |  |  |  |
Issue of shares on convertible debenture interest payment | $ 1,064 |  |  |  |  | $ 270 | $ 235 | $ 251 | 1,498 |  | $ 486 |
Percentage of issued and outstanding shares acquired |  |  |  |  |  |  |  |  |  |  | 20.00% |
Options granted, maximum term |  |  |  |  |  |  |  |  |  |  | 10 years |
Share-based payments (Note 12) |  |  |  |  |  |  |  |  | $ 37,142 |  | $ 35,146 |
Equity Distribution Agreement At The Market Programme January Two Thousand And Twenty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issue of ordinary shares |  | $ 182,066 |  |  |  |  |  |  |  |  |  |
Payment for share issue costs |  | $ 6,890 |  |  |  |  |  |  |  |  |  |
Average share price | $ / shares |  | $ 7.36 |  |  |  |  |  |  |  |  |  |
Increase decrease in the shares issued during the period | shares |  | 24,724,125 |  |  |  |  |  |  |  |  |  |
Common Stock Shares Subscribed But Not Issued Value |  |  |  |  |  |  |  |  |  |  |  | $ 250,000
Equity Distribution Agreement At The Market Programme January Two Thousand And Twenty Three [Member] | Commission Fees [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Share issuance costs |  | $ 3,704 |  |  |  |  |  |  |  |  |  |
Equity Distribution Agreement At The Market Programme January Two Thousand And Twenty Three [Member] | Other Transaction Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Share issuance costs |  | $ 3,186 |  |  |  |  |  |  |  |  |  |
Equity Distribution Agreement At The Market Programme December Two Thousand And Twenty Three [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock Shares Subscribed But Not Issued Value | $ 500,000 |  |  |  |  |  |  |  |  |  |  |
2020 Debentures [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock issue price per share | shares |  |  | 8,663,461 |  |  |  |  |  |  |  |  |
Stock issued during the period value conversion of debentures |  |  | $ 72,773 |  |  |  |  |  |  |  |  |
Stock issued during period related to accrued and unpaid interest | shares |  |  | 19,522 |  |  |  |  |  |  |  |  |
Stock issued during period value related to accrued and unpaid interest |  |  | $ 164 |  |  |  |  |  |  |  |  |
2023 Debentures [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Common shares issued | shares |  |  |  |  |  |  |  |  | 113,803 | 113,803 |  |
Issue of shares on convertible debenture interest payment |  |  |  |  |  |  |  |  | $ 1,064 | $ 724 |  |
Establishment fee (shares) | shares |  |  |  | 634,615 | 634,615 |  |  |  |  |  |  |
Establishment fee |  |  |  | $ 4,443 | $ 3,300 |  |  |  |  |  |  |
Included in exploration and evaluation assets [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Capitalized to exploration and evaluation assets |  |  |  |  |  |  |  |  | 6,867 |  | 6,364 |
Expensed to the statement of loss profit and comprehensive loss profit [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Share-based payments (Note 12) |  |  |  |  |  |  |  |  | 37,142 |  | 35,146 |
Reserves [member] |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |
Exercise of options |  |  |  |  |  |  |  |  | 16,288 |  | 6,260 |
Expense from equity settled share based payment transactions |  |  |  |  |  |  |  |  | $ 44,009 |  | $ 41,510 |

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