Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Common Shares
Share-Based Compensation
Number of shares issued (in shares)	4,567,770	1,634,588	7,542,996	1,634,588
Employee stock option
Share-Based Compensation
Share based compensation expense	$ 0.7		$ 1.1
Employee stock option | Exploration and evaluation activities
Share-Based Compensation
Share based compensation expense	0.2	$ 0.0	0.2	$ 0.0
Employee stock option | General and administration expenses
Share-Based Compensation
Share based compensation expense	$ 0.5	$ 0.4	$ 0.9	$ 0.4
2021 Incentive Equity Plan
Share-Based Compensation
Number of additional shares authorized subject to approval to share holders			40,000,000
Units sign-on grant	263,526		263,526
Aggregate number of common shares reserved for issuance under the plan	70,262,856		70,262,856
Common Shares issued and outstanding percentage			4.00%
2021 Incentive Equity Plan | Non-employee directors
Share-Based Compensation
Common shares reserved for issuance	2,243,853		2,243,853