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Stock Incentive Plans - Schedule of Stock Options Valuation Assumptions Using a Black-Scholes Option Pricing Model (Details) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Expected volatility, minimum 64.60% 64.80% 64.60% 63.20%
Expected volatility, maximum 66.90% 65.40% 67.10% 65.40%
Weighted-average risk-free interest rate, minimum 0.90% 0.33% 0.50% 0.33%
Weighted-average risk-free interest rate, maximum 1.20% 0.54% 1.20% 1.73%
Maximum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Expected term (in years) 6 years 3 months 6 years 3 months 6 years 3 months 6 years 3 months
Underlying common stock fair value $ 9.62 $ 18.04 $ 13.91 $ 21.75
Minimum        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Expected term (in years) 5 years 6 months 5 years 6 months 5 years 6 months 5 years 6 months
Underlying common stock fair value $ 6.53 $ 12.66 $ 6.53 $ 12.66