Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Key Assumptions Estimate Fair Value Of Stock Options (Details)

v3.20.4
Stock-Based Compensation - Key Assumptions Estimate Fair Value Of Stock Options (Details)
3 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Key assumptions used to estimate the fair value of the stock options granted    
Expected term of options (years) 6 years 7 years
Expected common stock price volatility, minimum 83.10% 78.00%
Expected common stock price volatility, maximum 83.30% 81.10%
Risk-free interest rate, minimum 0.60% 1.70%
Risk-free interest rate, maximum 0.70% 1.80%