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Stock-based Compensation - Weighted-average Assumptions (Details) - $ / shares
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]    
Weighted average expected volatility 97.10% 91.80%
Weighted average expected term 4 years 8 months 12 days 4 years 3 months 18 days
Weighted average risk-free interest rate 3.90% 2.60%
Dividend yield 0.00% 0.00%
Weighted-average fair value per share (in dollars per share) $ 1.49 $ 2.21