v3.26.1
Share-based compensation expenses - Activities of Options (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Jul. 31, 2018
May 31, 2018
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2014
Share-based compensation expenses            
Share-based compensation expenses allocated from Jimu Parent     $ 14 $ 0 $ (972)  
Options Outstanding            
Granted (shares) 740,000 16,042,500        
Weighted Average Remaining Contractual Life            
Outstanding (in years)     0 years      
Vested and exercisable as of December 31, 2025     0 years      
Employee Stock Option            
Share-based compensation expenses            
Share-based compensation expenses allocated from Jimu Parent     $ 0 $ 0 $ 0  
Unrecognized share-based compensation expenses     $ 0      
Options Outstanding            
Outstanding at beginning of the year (in shares)     1,961,750      
Granted (shares)     0 0 0  
Outstanding at end of the year (in shares)     1,961,750 1,961,750    
Vested and exercisable as of December 31, 2025 (in shares)     1,961,750      
Weighted Average Exercise Price            
Outstanding at beginning of the year (in dollars per share)     $ 0.3015      
Outstanding at end of the year (in dollars per share)     0.3015 $ 0.3015    
Vested and exercisable as of December 31, 2025 (in dollars per share)     $ 0.3015      
Weighted Average Remaining Contractual Life            
Outstanding (in years)     3 years 11 months 12 days 4 years 11 months 12 days    
Vested and exercisable as of December 31, 2025     3 years 11 months 12 days      
Average Intrinsic Value            
Outstanding     $ 5      
Outstanding     5 $ 5    
Vested and exercisable as of December 31, 2025     5      
Jimu Parent            
Share-based compensation expenses            
Vesting period (in years)           4 years
Vesting percentage at first anniversary           25.00%
Options expiration period (in years)           10 years
Unrecognized share-based compensation expenses     $ 0      
Options Outstanding            
Outstanding at beginning of the year (in shares)     25,895      
Exercised (shares)     (7,500)      
Forfeited (shares)     (12,090)      
Outstanding at end of the year (in shares)     6,305 25,895    
Vested and exercisable as of December 31, 2025 (in shares)     6,305      
Weighted Average Exercise Price            
Outstanding at beginning of the year (in dollars per share)     $ 1      
Forfeited (in dollars per share)     $ 1      
Outstanding at end of the year (in dollars per share)       $ 1    
Weighted Average Remaining Contractual Life            
Outstanding (in years)       2 years 5 months 12 days