Income and Mining Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Examination [Line Items]
Income (loss) before income and mining taxes	$ 9,376	$ 14,846
Tax (expense) benefit	1,694	12,786
United States
Income Tax Examination [Line Items]
United States, Income (loss) before tax	(10,130)	(8,531)
Tax (expense) benefit	(1,199)	(1,625)
Canada
Income Tax Examination [Line Items]
Foreign, Income (loss) before tax	7,525	12,785
Tax (expense) benefit	0	0
Mexico
Income Tax Examination [Line Items]
Foreign, Income (loss) before tax	(27,033)	(32,914)
Tax (expense) benefit	(495)	(11,161)
Other jurisdictions
Income Tax Examination [Line Items]
Foreign, Income (loss) before tax	2	(3,248)
Tax (expense) benefit	$ 0	$ 0