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Stock-Based Compensation - Schedule of Assumptions Used in Black-Scholes Option-Pricing Model for Estimating Fair Value of Stock Options Granted (Details)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Risk free interest rate, minimum 0.64% 0.48%
Risk free interest rate, maximum 1.11% 1.51%
Expected volatility 70.00% 70.00%
Expected dividend 0.00% 0.00%
Minimum [Member]    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (years) 5 years 6 months 6 years 3 months
Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Expected term (years) 6 years 3 months 6 years 3 months