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Stock-Based Payments - Schedule of Fair Value of Employee and Director Stock Options Granted Estimated Using Black-Scholes Option Pricing Model With Following Weighted Average Assumptions (Details) - Employee and Director Stock Options
9 Months Ended
Sep. 30, 2021
$ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Stock price $ 15.14
Exercise price $ 15.05
Expected term 7 years 14 days
Expected volatility 78.27%
Risk-free interest rate 1.18%
Dividend rate 0.00%