XML 61 R48.htm IDEA: XBRL DOCUMENT v3.23.2
Stock-Based Compensation - Weighted Average Assumptions (Details) - Stock Options - Employees and Directors
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate 3.45% 2.90% 4.05% 2.04%
Expected volatility 101.00% 95.00% 100.00% 94.00%
Expected life in years 5 years 7 months 6 days 5 years 8 months 12 days 5 years 6 months 5 years 8 months 12 days
Dividend yield 0.00% 0.00% 0.00% 0.00%