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Stockholders' Equity - Preferred Stock (Details) - $ / shares
 9 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Class of Stock [Line Items]    
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares outstanding (in shares) 1,952 1,952
Series B Convertible Preferred Stock [Member] | 2018 Rights Offering [Member]    
Class of Stock [Line Items]    
Preferred stock, shares outstanding (in shares) 1,014  
Number of preferred stock, shares converted 398  
Series C Convertible Preferred Stock [Member] | 2018 Rights Offering [Member]    
Class of Stock [Line Items]    
Preferred stock, shares outstanding (in shares) 938  
Number of preferred stock, shares converted 27,792