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Stockholders' Equity - Stock-based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Stockholders' Equity        
Compensation expense $ 180   $ 330  
Director and Consultants        
Stockholders' Equity        
Compensation expense 30 $ 30 60 $ 170
Employee        
Stockholders' Equity        
Compensation expense $ 150   $ 270