v3.25.1
Share-based Compensation - Schedule of stock option activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award        
Number of Options and Shares, Exercised (30,835,538)      
2019 and 2020 Share Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award        
Number of Options and Shares Outstanding, Beginning balance 60,307,462 74,336,244 83,391,284  
Number of Options and Shares, Granted 0 0 579,600  
Number of Options and Shares, Exercised (8,109,300) (10,519,982) (5,801,840)  
Number of Options and Shares, Forfeited (2,078,800) (3,508,800) (3,832,800)  
Number of Options and Shares Outstanding, Ending balance 50,119,362 60,307,462 74,336,244 83,391,284
Weighted average exercise price, Outstanding $ 0.1 $ 0.1 $ 0.1  
Weighted average exercise price, Granted 0 0 0.1  
Weighted average exercise price, Exercised 0.1 0.1 0.1  
Weighted average exercise price, Forfeited 0.1 0.1 0.1  
Weighted average exercise price, Outstanding $ 0.1 $ 0.1 $ 0.1 $ 0.1
Weighted average remaining contractual life (in years) 4 years 9 months 21 days 4 years 4 months 28 days 5 years 6 months 21 days 6 years 8 months 12 days
Aggregate intrinsic value, Outstanding $ 596,170 $ 1,122,594 $ 750,796 $ 1,330,091
Number of Options Outstanding, Vested and expected 49,345,755 58,836,673    
Weighted average exercise price, Vested and expected $ 0.1 $ 0.1    
Weighted average remaining contractual life , Vested and expected (in years) 4 years 9 months 14 days 4 years 4 months 2 days    
Aggregate intrinsic value, Vested and expected $ 586,968 $ 1,095,245    
Number of Options Outstanding, Exercisable 41,387,162 43,618,062    
Weighted average exercise price, Exercisable $ 0.1 $ 0.1    
Weighted average remaining contractual life , Exercisable (in years) 4 years 6 months 3 days 3 years 4 months 6 days    
Aggregate intrinsic value, Exercisable $ 492,300 $ 811,950    
2021 Share Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award        
Number of Options and Shares Outstanding, Beginning balance 108,557,400 108,557,400 108,557,400  
Number of Options and Shares, Granted 0 0 0  
Number of Options and Shares Outstanding, Ending balance 108,557,400 108,557,400 108,557,400 108,557,400
Weighted average exercise price, Outstanding $ 14.63 $ 14.63 $ 14.63  
Weighted average exercise price, Granted 0 0 0  
Weighted average exercise price, Outstanding $ 14.63 $ 14.63 $ 14.63 $ 14.63
Weighted average remaining contractual life (in years) 6 years 2 months 8 days 7 years 2 months 8 days 8 years 2 months 8 days 9 years 2 months 8 days