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Deferred income tax - Composition of the provision for income taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of Deferred income tax [Line Items] |  |  |
Current | $ (69,306) | $ (15,633) | $ (20,375)
Deferred | 26,312 | 15,592 | 44,046
Total income tax | (42,994) | (41) | 23,671
Income Tax Expense [Member] |  |  |
Disclosure of Deferred income tax [Line Items] |  |  |
Current | (63,782) | (12,091) | (13,128)
Deferred | 26,193 | 15,449 | 43,951
Total income tax | (37,589) | 3,358 | 30,823
Mining Royalties and Special Mining Tax [Member] |  |  |
Disclosure of Deferred income tax [Line Items] |  |  |
Current | (5,524) | (3,542) | (7,247)
Deferred | 119 | 143 | 95
Total income tax | $ (5,405) | $ (3,399) | $ (7,152)

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