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Stock-Based Compensation - Assumptions Using Black-Scholes for Estimated Fair Value of Stock Options (Details) - Options to purchase Common Stock
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Dividend yield 0.00% 0.00%
Expected volatility (weighted-average) 109.00% 106.00%
Expected term (in years) 5 years 2 months 12 days 6 years
Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Risk-free interest rate (range) 3.56% 1.62%
Expected volatility (range) 105.00% 98.00%
Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Risk-free interest rate (range) 4.06% 3.75%
Expected volatility (range) 110.00% 110.00%