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Share Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended 12 Months Ended
Dec. 31, 2019
Jul. 10, 2019
Dec. 31, 2020
Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized compensation expense related to unvested RSAs, RSUs and PSUs $ 17.5   $ 23.7  
Weighted-average period related to unvested RSAs, RSUs and PSUs 2 years 3 months 3 days   2 years 7 months 9 days  
Share based compensation expense $ 22.0   $ 19.4  
Vested, Units   9,460 9,171  
Weighted average grant date fair value   $ 182.83 $ 180.87  
Selling, General and Administrative Expenses        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share based compensation expense   $ 0.9   $ 0.8
Incentive Plan        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Common stock reserved for issuance     7,326,728