Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock-Based Compensation (Details)

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Stockholders' Equity - Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Stockholders' Equity        
Total stock-based compensation expense $ 689 $ 781 $ 2,225 $ 2,285
Research and development        
Stockholders' Equity        
Total stock-based compensation expense 304 276 881 752
General and administrative        
Stockholders' Equity        
Total stock-based compensation expense $ 385 $ 505 $ 1,344 $ 1,533