Income and Mining Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Examination [Line Items]
United States, Income (loss) before tax	$ (107,021)	$ (107,477)	$ (34,196)
Foreign, Income (loss) before tax	(38,565)	(44,028)	(37,832)
Income (loss) before income and mining taxes	(68,456)	(63,449)	3,636
Tax (expense) benefit	$ 35,156	$ 14,658	$ 34,958