Additional Comprehensive Income (Loss) Detail - Summary of Pre-development, reclamation and other (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Business Combination [Line Items]
Care and maintenance costs		$ 10,440	$ 8,513	$ 15,616
(Gain) loss on sale of assets		698	4,250	12,879
Accretion		19,697	16,778	16,405
Acquisition related costs		26,409	8,517	0
Other Operating Income (Expense), Net		5,580	6,059	9,736
Pre-development, reclamation, and other		69,788	51,273	54,636
Kensington Royalty Matter
Business Combination [Line Items]
Gain (Loss) from Litigation Settlement	[1]	(95)
Royalty settlement	[1]		7,156	0
U.S. Wage and Hour Matter
Business Combination [Line Items]
Gain (Loss) from Litigation Settlement	[1]	$ 7,059
Royalty settlement	[1]		$ 0	$ 0

[1] See Note 18 -- Commitments and Contingencies for additional details on the Kensington royalty settlement and wage and hour litigation settlement.