Income and Mining Taxes - Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Examination [Line Items]
Income (loss) before income and mining taxes	$ (65,932)	$ 47,486	$ (56,556)	$ 62,332
Tax (expense) benefit	11,502	15,340	13,196	28,126
United States
Income Tax Examination [Line Items]
United States, Income (loss) before tax	(85,122)	29,647	(95,252)	21,116
Tax (expense) benefit	(998)	(7,228)	(2,197)	(8,853)
Canada
Income Tax Examination [Line Items]
Foreign, Income (loss) before tax	6,374	12,979	13,899	25,763
Tax (expense) benefit	(21)	0	(21)	0
Mexico
Income Tax Examination [Line Items]
Foreign, Income (loss) before tax	(25,636)	(30,827)	(52,669)	(63,741)
Tax (expense) benefit	(10,483)	(8,112)	(10,978)	(19,273)
Other jurisdictions
Income Tax Examination [Line Items]
Foreign, Income (loss) before tax	72	9	74	(3,238)
Tax (expense) benefit	$ 0	$ 0	$ 0	$ 0