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Stock-Based Compensation - Valuation (Details) - Employee Stock Option
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Black-Scholes option with following assumptions:        
Expected stock price volatility (as a percent) 82.00% 92.00%   92.00%
Expected stock price volatility, minimum (as a percent)     82.00%  
Expected stock price volatility, maximum (as a percent)     93.00%  
Expected option term 6 years 6 years 6 years 6 years
Risk-free interest rate (as a percent)   4.10%    
Risk-free interest rate, minimum (as a percent) 3.50%   3.50% 3.50%
Risk-free interest rate, maximum (as a percent) 4.30%   4.50% 4.10%
Expected dividend yield (as a percent) 0.00% 0.00% 0.00% 0.00%