v3.26.1
Share based compensation - Activities of PSUs (Details) - Performance Shares - $ / shares
1 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2025
Dec. 31, 2024
Number of PSUs      
Outstanding at the beginning (in shares)   2,000,000  
Aggregate number of shares granted (in shares) 6,000,000 933,334  
Vested (in shares)   (928,667)  
Forfeited (in shares)   (1,674,667)  
Cancelled (in shares)   (330,000)  
Outstanding at the end (in shares)   0 2,000,000
Weighted Average Fair value at grant date      
Outstanding at the beginning (in USD per share)   $ 1.69  
Weighted average granted (in USD per share)   1.72 $ 1.69
Weighted average vested (in USD per share)   1.71  
Weighted average forfeited (in USD per share)   1.70  
Weighted average cancelled (in USD per share)   1.69  
Outstanding at the end (in USD per share)   $ 0 $ 1.69