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Stock-Based Compensation (Details) - Stock Options - Employees and Directors
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate 3.21% 0.90% 2.05% 0.90%
Expected volatility 97.00% 94.00% 94.00% 93.00%
Expected life in years 5 years 7 months 6 days 5 years 8 months 12 days 5 years 8 months 12 days 5 years 9 months 18 days
Dividend yield 0.00% 0.00% 0.00% 0.00%