v3.25.2
Retained earnings - Appropriated (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Retained earnings        
Balance at beginning of the period     $ 389,789  
Balance at end of the period $ 410,878   410,878  
Appropriated        
Retained earnings        
Balance at beginning of the period 13,668 $ 12,174 12,180 $ 11,851
Appropriation of retained earnings 0 0 1,488 323
Balance at end of the period $ 13,668 $ 12,174 $ 13,668 $ 12,174