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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)
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Risk free interest rate, minimum 0.46% 0.41%
Risk free interest rate, maximum 1.14% 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 9 months