v3.25.2
Segments - Significant Expense and Asset Categories (Details) - Business Operating Segment [Member] - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segments [Abstract]      
Research and development $ 9,746 $ 17,867  
General and administrative 2,776 3,072  
Total operating expenses 12,522 20,939  
Total operating loss (12,522) (20,939)  
Interest income 62 160  
Interest expense (3,570) (2,321)  
Change in fair value of derivatives (1,122) (760)  
Total other income (expense) (4,630) (2,921)  
Net loss (17,152) (23,860)  
Preferred stock dividends (37) (72)  
Net loss applicable to common stockholders (17,180) $ (23,932)  
Cash and cash equivalents $ 13,771   $ 15,120