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Share-Based Compensation - Share Options Narratives (Details)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award  
Share based compensation not yet recognized for unvested shares | $ $ 9.4
Share based compensation not yet recognized for unvested shares vesting period 2 years 6 months
Share options  
Share-based Compensation Arrangement by Share-based Payment Award  
Weighted average grant date fair value (usd per share) | $ / shares $ 5.96
Share-based compensation arrangement by share-based payment award, shares issued in period | shares 1,602,500