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Stock-Based Compensation - Summary of Restricted Stock Units Activity (Details) - Restricted stock units (RSUs) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Number of shares      
Number of shares, outstanding (in shares) 552,238    
Number of shares, granted (in shares) 181,367    
Number of shares, forfeited (in shares) (24,019)    
Number of shares, settled (in shares) (181,210)    
Number of shares, outstanding (in shares) 528,376 552,238  
Weighted Average Grant Date Fair Value      
Weighted average grant date fair value, outstanding (in $ per share) $ 111.49    
Weighted-average grant-date fair value (in $ per share) 108.42 $ 131.16 $ 108.32
Weighted average grant date fair value, forfeited (in $ per share) 95.13    
Weighted average grant date fair value, settled (in $ per share) 98.20    
Weighted average grant date fair value, outstanding (in $ per share) $ 115.74 $ 111.49