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Segment information - Additional Information (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
segment
Dec. 31, 2022
USD ($)
Disclosure of operating segments [line items]    
Number of reportable segments | segment 5  
Metal sales $ 1,008,501 $ 871,984
Turkiye    
Disclosure of operating segments [line items]    
Metal sales 475,349 398,602
Turkiye | One customer    
Disclosure of operating segments [line items]    
Metal sales 301,692 243,257
Canada    
Disclosure of operating segments [line items]    
Metal sales 346,315 312,962
Canada | One customer    
Disclosure of operating segments [line items]    
Metal sales 338,189 311,056
TURKEY and GREECE | One customer    
Disclosure of operating segments [line items]    
Metal sales $ 82,558 $ 90,650