XML 122 R104.htm IDEA: XBRL DOCUMENT v3.26.1
Share-based compensation - Number of share options granted and their related weighted average exercise prices (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-based compensation        
Number of options, Beginning balance 81,500 119,002 126,002  
Number of options, Granted 4,562,919 0 0  
Number of options, Forfeited   0 0  
Number of options Exercised 0 (37,502) (7,000)  
Number of options, Ending balance 4,644,419 81,500 119,002 126,002
Number of options, unvested 4,562,919      
Number of options, Exercisable 81,500      
Weighted average exercise price, Beginning balance $ 2.55 $ 2.55 $ 2.55  
Weighted average exercise price, Granted 2.3      
Weighted average exercise price, Exercised   2.55 2.55  
Weighted average exercise price, Unvested 2.3      
Weighted average exercise price, Ending balance 2.3044 $ 2.55 $ 2.55 $ 2.55
Weighted average exercise price, Vested and Exercisable $ 2.55      
Weighted average remaining contractual life 9 years 5 months 26 days 2 years 7 months 6 days 3 years 7 months 6 days 4 years 7 months 6 days
Weighted average remaining contractual life, Unvested 9 years 7 months 20 days      
Weighted average remaining contractual life, Vested and Exercisable 1 year 7 months 6 days      
Aggregate intrinsic value $ 2,673 $ 42 $ 132 $ 176
Aggregate intrinsic value, Unvested 2,646      
Aggregate intrinsic value, Vested Exercisable $ 27