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Share-Based Payments - Restricted Share Units ("RSUs") (Details) - USD ($)
1 Months Ended 9 Months Ended
Jan. 31, 2021
Sep. 30, 2021
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award    
Fair value of awards on grant date   $ 905,000
Time-Based RSUs    
Share-based Compensation Arrangement by Share-based Payment Award    
Granted (in shares) 22,194  
Granted $ 31.52  
Performance-Based RSUs    
Share-based Compensation Arrangement by Share-based Payment Award    
Granted (in shares) 13,516  
Granted $ 15.16