Related Party Transactions - Disclosure of Information About Key Management Personnel (Detail) - CAD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [abstract]
Key management personnel compensation, short-term employee benefits	[1]	$ 5,950	$ 6,034
Key management personnel compensation, share-based payment	[2]	32,397	24,747
Key management personnel compensation, consulting fees	[3]	130	130
Remuneration attributed to key management personnel		$ 38,477	$ 30,911

[1] Short-term compensation to key management personnel for the twelve months ended December 31, 2025 amounted to $5,950 (2024 - $6,034) of which $5,488 (2024 - $6,034) was expensed and included in salaries, benefits, and directors’ fees on the statement of net loss and comprehensive loss and $462 (2024 - nil) was capitalized to exploration and evaluation assets.

[2] Share-based payments to key management personnel for the twelve months ended December 31, 2025 amounted to $32,397 (2024 - $24,747) of which $30,486 (2024 - $24,747) was expensed and $1,911 (2024 -  nil) was capitalized to exploration and evaluation assets.

[3] Consulting fees were expensed and included in professional fees and insurance on the statement of net loss and comprehensive loss and relate to services from a company associated with one of its directors in relation to advice on corporate matters.