Income and Mining Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Tax (expense) benefit	$ (96,881)	$ 25,817	$ (15,873)	$ 49,030
Effective income tax rate	(57.00%)	34.60%
Increase (decrease) income tax expense	$ 9,800	$ (500)
Decrease in valuation allowance	216,000
Deferred tax asset, net of valuation allowance	55,000		55,000
Unrecognized tax benefits	28,100		28,100		$ 0
Income-tax related interest and penalties	$ 5,500		$ 5,500		$ 0