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Intangible assets and goodwill - Movements in Identifiable Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | $ 156,832 | $ 167,303
Additions | 17,208 | 408
Amortization for the year | (7,758) | (10,601)
Impairment losses recognized in income for the year | (10) | (9)
Other increases / decreases for foreign currency exchange rates | 3,629 | 3
Other increases (decreases) | (985) | (272)
Subtotal | 12,084 | (10,471)
Closing balance | 168,916 | 156,832
Indefinite | Goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 958 | 967
Additions | 0 | 0
Impairment losses recognized in income for the year | (10) | (9)
Other increases / decreases for foreign currency exchange rates | 0 | 0
Other increases (decreases) | 0 | 0
Subtotal | (10) | (9)
Closing balance | 948 | 958
Historical cost |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 238,730 |
Closing balance | 259,148 | 238,730
Historical cost | Indefinite | Goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 4,492 |
Closing balance | 4,491 | 4,492
Accumulated amortization |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (81,898) |
Closing balance | (90,232) | (81,898)
Accumulated amortization | Indefinite | Goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (3,534) |
Closing balance | (3,543) | (3,534)
IT programs | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 3,190 | 3,249
Additions | 6,700 | 197
Amortization for the year | (1,430) | (1,451)
Impairment losses recognized in income for the year | 0 | 0
Other increases / decreases for foreign currency exchange rates | (41) | 6
Other increases (decreases) | 11 | 1,189
Subtotal | 5,240 | (59)
Closing balance | 8,430 | 3,190
IT programs | Historical cost | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 37,849 |
Closing balance | 43,851 | 37,849
IT programs | Accumulated amortization | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (34,659) |
Closing balance | (35,421) | (34,659)
Mining rights | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 134,924 | 140,873
Additions | 0 | 196
Amortization for the year | (1,608) | (4,684)
Impairment losses recognized in income for the year | 0 | 0
Other increases / decreases for foreign currency exchange rates | 3,694 | 0
Other increases (decreases) | (3,891) | (1,461)
Subtotal | (1,805) | (5,949)
Closing balance | 133,119 | 134,924
Mining rights | Historical cost | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 161,451 |
Closing balance | 162,492 | 161,451
Mining rights | Accumulated amortization | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (26,527) |
Closing balance | (29,373) | (26,527)
Water rights and rights of way | Indefinite |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 4,909 | 4,909
Additions | 0 | 0
Impairment losses recognized in income for the year | 0 | 0
Other increases / decreases for foreign currency exchange rates | 0 | 0
Other increases (decreases) | 0 | 0
Subtotal | 0 | 0
Closing balance | 4,909 | 4,909
Water rights and rights of way | Historical cost | Indefinite |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 7,420 |
Closing balance | 7,420 | 7,420
Water rights and rights of way | Accumulated amortization | Indefinite |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (2,511) |
Closing balance | (2,511) | (2,511)
Water rights | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 7,580 | 11,369
Additions | 0 | 0
Amortization for the year | (3,789) | (3,789)
Impairment losses recognized in income for the year | 0 | 0
Other increases / decreases for foreign currency exchange rates | 0 | 0
Other increases (decreases) | 0 | 0
Subtotal | (3,789) | (3,789)
Closing balance | 3,791 | 7,580
Water rights | Historical cost | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 18,000 |
Closing balance | 18,000 | 18,000
Water rights | Accumulated amortization | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (10,420) |
Closing balance | (14,209) | (10,420)
Intellectual property | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 5,201 | 5,850
Additions | 10,130 | 0
Amortization for the year | (805) | (649)
Impairment losses recognized in income for the year | 0 | 0
Other increases / decreases for foreign currency exchange rates | 0 | 0
Other increases (decreases) | 235 | 0
Subtotal | 9,560 | (649)
Closing balance | 14,761 | 5,201
Intellectual property | Historical cost | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 7,215 |
Closing balance | 17,580 | 7,215
Intellectual property | Accumulated amortization | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (2,014) |
Closing balance | (2,819) | (2,014)
Other intangible assets | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 70 | 86
Additions | 378 | 15
Amortization for the year | (126) | (28)
Impairment losses recognized in income for the year | 0 | 0
Other increases / decreases for foreign currency exchange rates | (24) | (3)
Other increases (decreases) | 2,660 | 0
Subtotal | 2,888 | (16)
Closing balance | 2,958 | 70
Other intangible assets | Historical cost | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | 2,303 |
Closing balance | 5,314 | 2,303
Other intangible assets | Accumulated amortization | Intangible assets other than goodwill |  |
Disclosure Of Intangible Assets And Goodwill [Line Items] |  |
Opening balance | (2,233) |
Closing balance | $ (2,356) | $ (2,233)

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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in intangible assets and goodwill resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause viii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_viii&doctype=Standard -URIDate 2024-03-27 + Details
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