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Stock Based Awards and Other Equity Instruments - Weighted-Average Assumptions of Estimated Fair Value of Stock Options (Details) - $ / shares
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Risk free interest rate 0.66% 1.18%
Expected term (in years) 5 years 3 months 29 days 5 years 3 months 18 days
Expected volatility 49.69% 43.13%
Weighted-average grant date fair value $ 20.39 $ 10.11