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Employee Benefits and Share-Based Compensation - Summary of Share Option Activity (Details) - Stock Options - 2009 Plan - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Number of Shares    
Outstanding at beginning of period (in shares) 3,932  
Granted (in shares) 150  
Exercised (in shares) (196)  
Expired (in shares) (6)  
Forfeited (in shares) (60)  
Outstanding at end of period (in shares) 3,820 3,932
Exercisable at end of period (in shares) 1,608  
Vested and expected to vest at end of period (in shares) 3,598  
Weighted-Average Exercise Price    
Outstanding beginning balance (in dollars per share) $ 62.50  
Granted (in dollars per share) 125.80  
Exercised (in dollars per share) 58.49  
Expired (in dollars per share) 78.32  
Forfeited (in dollars per share) 72.27  
Outstanding ending balance (in dollars per share) 65.02 $ 62.50
Exercisable at end of period (in dollars per share) 47.83  
Vested and expected to vest at end of period (in dollars per share) $ 64.01  
Weighted-Average Remaining Years    
Outstanding 7 years 6 months 7 years 9 months 18 days
Exercisable 5 years 9 months 18 days  
Vested and expected to vest 7 years 4 months 24 days  
Aggregate Intrinsic Value    
Outstanding $ 247,796 $ 226,160
Exercisable 131,946  
Vested and expected to vest $ 237,072