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Related parties (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]      
Purchases $ 88,440 $ 157,592 $ 65,067
Sales 1,780 905 10,452
Votorantim S. A. [Member]      
IfrsStatementLineItems [Line Items]      
Purchases 8,908 7,484 4,704
Auren Comercializadora De Energia Ltda [Member]      
IfrsStatementLineItems [Line Items]      
Purchases 6,384 7,971 4,974
Sales 1,140 744 744
Campos Novos Energia SA [Member]      
IfrsStatementLineItems [Line Items]      
Purchases 51,973 61,545 4,954
Companhia Brasileira De Aluminio [Member]      
IfrsStatementLineItems [Line Items]      
Purchases   210 3,787
Sales 640 161 9,708
Group Andrade Gutierrez [Member]      
IfrsStatementLineItems [Line Items]      
Purchases 19,832 73,757 38,907
Scotiabank Peru S.A.A [Member]      
IfrsStatementLineItems [Line Items]      
Purchases 282 17 41
Votorantim Cimentos SA [Member]      
IfrsStatementLineItems [Line Items]      
Purchases   1,050 1,494
Votorantim International CSC SAC [Member]      
IfrsStatementLineItems [Line Items]      
Purchases   5,122 5,049
Other related parties [member]      
IfrsStatementLineItems [Line Items]      
Purchases $ 1,061 $ 436 $ 1,157