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Impairment of long-lived assets (Details 3)
$ in Thousands
Dec. 31, 2024
USD ($)
Juiz De Fora [Member]  
IfrsStatementLineItems [Line Items]  
Excess over recoverable amount $ 146,341
Percentage assigned change 23.33%
Value of assumption $ 2,246
Appreciation of BRL percentage 13.00%
Appreciation of BRL price 4.92
Juiz De Fora [Member] | Top of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 71.13%
Juiz De Fora [Member] | Bottom of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 13.08%
Cajamarquilla [member]  
IfrsStatementLineItems [Line Items]  
Excess over recoverable amount $ 681,438
Percentage assigned change 20.01%
Value of assumption $ 2,344
Cajamarquilla [member] | Top of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 94.42%
Cajamarquilla [member] | Bottom of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 13.77%
Cerro Lindo [member]  
IfrsStatementLineItems [Line Items]  
Excess over recoverable amount $ 269,150
Percentage assigned change 24.81%
Value of assumption $ 2,203
Cerro Lindo [member] | Top of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 169.19%
Cerro Lindo [member] | Bottom of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 19.07%
Mining Peru [Member]  
IfrsStatementLineItems [Line Items]  
Excess over recoverable amount $ 82,740
Percentage assigned change 7.43%
Value of assumption $ 2,712
Mining Peru [Member] | Top of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 38.35%
Mining Peru [Member] | Bottom of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 9.80%
Aripuana [Member]  
IfrsStatementLineItems [Line Items]  
Excess over recoverable amount $ 305,093
Percentage assigned change 15.43%
Value of assumption $ 2,478
Appreciation of BRL percentage 13.88%
Appreciation of BRL price 4.87
Aripuana [Member] | Top of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 56.34%
Aripuana [Member] | Bottom of range [member]  
IfrsStatementLineItems [Line Items]  
Percentage assigned change 11.95%