v3.26.1
Loans and Borrowings - Movement (Details) - USD ($)
$ in Thousands
 1 Months Ended 12 Months Ended
May 31, 2024
Feb. 28, 2022
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about borrowings [line items]        
Principal payments     $ (54,740) $ (39,950)
Interest paid, classified as financing activities     (42,736) (32,166)
Senior notes due 2030        
Disclosure of detailed information about borrowings [line items]        
Balance, beginning of year     404,152  
Proceeds from loans and borrowings   $ 392,000    
Principal payments     0  
Interest paid, classified as financing activities     (26,000)  
Interest costs, including interest capitalized     26,940  
Borrowing costs capitalised     0  
Foreign exchange gain (loss)     0  
Balance, end of year     405,092 404,152
Senior Credit Facility        
Disclosure of detailed information about borrowings [line items]        
Proceeds from loans and borrowings     30,000  
Principal payments     (10,000)  
Interest paid, classified as financing activities     (11,596)  
Interest costs, including interest capitalized     12,090  
Borrowing costs capitalised     0  
Foreign exchange gain (loss)     0  
Copper Prepayment Facility        
Disclosure of detailed information about borrowings [line items]        
Balance, beginning of year     46,530  
Proceeds from loans and borrowings $ 50,000   25,000  
Principal payments     (32,937)  
Interest paid, classified as financing activities     (4,128)  
Interest costs, including interest capitalized     4,622  
Borrowing costs capitalised     0  
Foreign exchange gain (loss)     0  
Balance, end of year     39,087 46,530
Other        
Disclosure of detailed information about borrowings [line items]        
Balance, beginning of year     17,295  
Proceeds from loans and borrowings     2,404  
Principal payments     (11,803)  
Interest paid, classified as financing activities     (1,012)  
Interest costs, including interest capitalized     835  
Borrowing costs capitalised     0  
Foreign exchange gain (loss)     510  
Balance, end of year     8,229 17,295
Consolidated        
Disclosure of detailed information about borrowings [line items]        
Balance, beginning of year     602,189 426,233
Proceeds from loans and borrowings     57,404 214,565
Principal payments     (54,740) (39,950)
Interest paid, classified as financing activities     (42,736) (32,166)
Interest costs, including interest capitalized     44,487 36,467
Borrowing costs capitalised     0 (2,143)
Foreign exchange gain (loss)     510 (817)
Balance, end of year     $ 607,114 $ 602,189