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Share-based Compensation - Options activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Number of shares        
Outstanding at the beginning 56,274,213 59,961,539 48,740,000  
Number of options granted 0 2,765,000 18,035,000  
Number of options Exercised (3,770,958) (4,502,326) (5,403,461)  
Number of options Forfeited (831,250) (1,950,000) (1,410,000)  
Outstanding at the end 51,672,005 56,274,213 59,961,539 48,740,000
Weighted average exercise price per share        
Outstanding at the beginning (in dollars per share) $ 0.16 $ 0.17 $ 0.33  
Granted (in dollars per share)   0.20 0.24  
Exercised (in dollars per share) 0.31 0.20 0.14  
Forfeited (in dollars per share) 0.36 0.47 0.31  
Outstanding at the end (in dollars per share) 0.15 0.16 0.17 $ 0.33
Weighted average grant date fair value per share        
Outstanding at the beginning (in dollars per share) 4.42 4.40 1.05  
Granted (in dollars per share)   3.27 12.55  
Exercised (in dollars per share) 3.54 2.09 0.68  
Forfeited (in dollar per share) 7.16 7.69 7.21  
Outstanding at the end (in dollars per share) $ 4.44 $ 4.42 $ 4.40 $ 1.05
Weighted average remaining contractual term and Aggregate intrinsic value        
Weighted average remaining contractual term 4 years 11 months 12 days 6 years 14 days 6 years 11 months 12 days 7 years 7 days
Outstanding at the beginning (in dollars) $ 98,287 $ 364,287 $ 591,879  
Outstanding at the end (in dollars) 105,285 98,287 364,287 $ 591,879
Difference between the exercise price of the underlying awards and the estimated fair value of the underlying stock $ 118,846 107,484 $ 374,760  
Share Option        
Number of shares        
Number of options granted 0      
Weighted average remaining contractual term and Aggregate intrinsic value        
Unrecognized share-based compensation expense $ 65,970 $ 127,887    
Weighted-average vesting period 6 months 21 days 1 year 18 days