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Share Based Payments - Restricted Stock Units (Details) - Restricted Share Units ("RSUs") - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Restricted Stock Units      
Number of shares outstanding 31,538    
Granted 19,566    
Vested and issued (9,512)    
Forfeited (2,957)    
Number of shares outstanding 38,635 31,538  
Weighted average grant date fair value per share      
Weighted average grant date fair value per share at the beginning $ 74.10    
Granted 11.04    
Vested and issued 85.25    
Forfeited 41.72    
Weighted average grant date fair value per share at the end $ 41.89 $ 74.10  
Additional disclosures      
Total unrecognized compensation related to unvested RSUs $ 0.5    
Recognition period 1 month 6 days    
Fair Value $ 0.1 $ 0.2 $ 0.4