v3.26.1
Trade and other receivables - Movement of allowance for expected credit losses (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]      
Trade receivables $ 22,330,000 $ 24,567,000  
Allowance      
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]      
Ending Balance (22,330,000)    
Trade and other receivables | Allowance      
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]      
Beginning balance 27,324,000 26,417,000 $ 26,382,000
Foreign exchange difference (890,000) 907,000 35,000
Ending Balance 26,434,000 27,324,000 26,417,000
Final balance 26,434,000 27,324,000 26,417,000
Other receivables | Allowance      
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]      
Other receivables 4,104,000 2,757,000 4,141,000
Trade receivables | Allowance      
Disclosure of reconciliation of changes in loss allowance and explanation of changes in gross carrying amount for financial instruments [line items]      
Trade receivables $ 22,330,000 $ 24,567,000 $ 22,276,000