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Share-based payment arrangements - Summary of share-based payments expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions $ 10,195 $ 10,744
Share options    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 2,717 4,376
Restricted share units with no performance criteria    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 1,789 1,620
Restricted share units with performance criteria    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 480 2,545
Deferred units    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions 2,446 144
Performance share units    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Expense from share-based payment transactions $ 2,763 $ 2,059