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INCOME AND MINING TAXES - Income Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Income before income and mining taxes	$ 414,758	$ 201,791	$ 136,657
United States
Income Tax Contingency [Line Items]
Income before income and mining taxes	138,230	119,654	61,198
Canada
Income Tax Contingency [Line Items]
Income before income and mining taxes	26,752	26,207	71,537
Turkey
Income Tax Contingency [Line Items]
Income before income and mining taxes	186,971	41,385	0
Other Foreign
Income Tax Contingency [Line Items]
Income before income and mining taxes	$ 62,805	$ 14,545	$ 3,922

X

- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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