Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation, Weighted-Average Assumptions Used in Black-Scholes Option-pricing Model (Details)

v3.23.1
Stock-based Compensation, Weighted-Average Assumptions Used in Black-Scholes Option-pricing Model (Details) - 2020 Plan Evergreen Provision [Member] - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Weighted-average Assumptions Used in Black-Scholes Option-pricing Model [Abstract]    
Expected stock price volatility 95.40% 99.60%
Expected life of options 6 years 1 month 6 days 6 years
Expected dividend yield 0.00% 0.00%
Risk free interest rate 3.70% 1.70%
Share-based Compensation Arrangement by Share-based Payment Award [Abstract]    
Stock options vested (in shares) 246,068 62,698
Weighted average fair value per share of options vesting (in dollars per share) $ 2.44 $ 2.9
Stock option exercised (in shares) 0 24,309
Aggregate intrinsic value $ 0 $ 59,000
Stock options forfeited (in shares) 0 8,288