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Share-Based Compensation - Restricted Shares and RSUs (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Share-based compensation          
Share-based compensation expense   $ 6,041 $ 6,199 $ 18,748 $ 19,042
Restricted Share Units (RSUs)          
Share-based compensation          
Share-based compensation expense   $ 1,146 $ 838 $ 2,697 $ 2,868
Number of shares          
Beginning of the period       885,021  
Granted       1,318,583  
Vested       (229,151)  
Forfeited       (320,710)  
End of the period   1,653,743   1,653,743  
Weighted Average Fair Value at Issuance          
Beginning of the period       $ 15.72  
Granted       10.71  
Vested       15.79  
Forfeited       14.08  
End of the period   $ 13.17   $ 13.17  
Time-based RSUs          
Share-based compensation          
Vesting percentage 25.00%