Additional Comprehensive Income (Loss) Detail - Summary of Pre-development, reclamation and other (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Business Combination [Line Items]
Care and maintenance costs		$ 2,617	$ 1,675	$ 7,667	$ 6,091
(Gain) loss on sale of assets		113	176	416	4,352
Accretion		4,988	4,233	14,620	12,463
Acquisition related costs		451	976	12,161	976
Other Operating Income (Expense), Net		676	1,523	4,190	4,769
Pre-development, reclamation, and other		15,843	8,583	45,957	35,401
Kensington Royalty Matter
Business Combination [Line Items]
Gain (Loss) from Litigation Settlement	[1]	0		(95)
Royalty settlement	[1]		0		6,750
U.S. Wage and Hour Matter
Business Combination [Line Items]
Gain (Loss) from Litigation Settlement	[1]	$ 6,998		$ 6,998
Royalty settlement	[1]		$ 0		$ 0

[1] See Note 17 -- Commitments and Contingencies for additional details on the Kensington royalty settlement and wage and hour litigation settlement.