Additional Comprehensive Income (Loss) Detail - Summary of Pre-development, reclamation and other (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024		Jun. 30, 2023
Other Income and Expenses [Abstract]
Care and maintenance costs	$ 2,055	$ 4,609	$ 4,416		$ 10,789
(Gain) loss on sale of assets	640	312	4,176		312
Accretion	4,154	4,073	8,230		8,066
Royalty settlement	0	0	6,750	[1]	0	[1]
Other Operating Income (Expense), Net	1,741	1,366	3,246		2,083
Pre-development, reclamation, and other	$ 8,590	$ 10,360	$ 26,818		$ 21,250

[1] See Note 16 -- Commitments and Contingencies for additional details on the Kensington royalty settlement