v3.26.1
Stock-Based Compensation - Stock based compensation expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Stock based compensation expense    
Total stock-based compensation expense $ 344 $ 1,363
Research and development    
Stock based compensation expense    
Total stock-based compensation expense 124 579
General and administrative    
Stock based compensation expense    
Total stock-based compensation expense $ 220 $ 784