v3.26.1
Financial instruments - fair values and risk management - Reconciliation from the opening balances to the closing balances for financial liabilities (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Measurement of fair values    
Liabilities at beginning of period $ 323,678  
Liabilities at end of period 292,026  
Share warrant obligation | Level 3    
Measurement of fair values    
Liabilities at beginning of period 362 $ 365
Net change in fair value (212) (100)
Liabilities at end of period 150 265
Put option liability | Level 3    
Measurement of fair values    
Liabilities at beginning of period 15,002 15,002
Liabilities at end of period $ 15,002 $ 15,002