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INCOME AND MINING TAXES - Effective Income Tax (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
Income before income and mining taxes | $ 414,758 | $ 201,791 | $ 136,657
Statutory tax rate | 27.00% | 27.00% | 27.00%
Expected income and mining tax expense | $ 111,985 | $ 54,484 | $ 36,897
Increase (decrease) attributable to: |  |  |
Non-taxable items | (4,379) | (22,236) | (7,518)
Foreign exchange and inflation | (124,946) | (676) | 1,650
Differences in foreign and future tax rates | 738 | (10,641) | (8,699)
Investment incentive tax credits | (14,082) | 1,983 | 0
Mining taxes and overseas withholding tax | 17,528 | 17,006 | 10,207
Expired losses | 1,455 | 1,129 | 738
Change in estimates in respect of prior years | (2,046) | (1,616) | (2,316)
Changes in recognition of deferred tax assets | 1,086 | 3,550 | 4,074
Other | (1,455) | 220 | 406
Total income tax provision (benefit) | $ (14,116) | $ 43,203 | $ 35,439

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