v3.26.1
Segments - Significant Expense and Asset Categories (Details) - Business Operating Segment [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Operating expenses:    
Research and development $ 14,290 $ 36,571
General and administrative 5,795 5,862
Total operating expenses 20,085 42,433
Total operating loss (20,085) (42,433)
Other income (expense):    
Interest income 126 338
Interest expense (7,329) (5,540)
Change in fair value of derivatives (3,548) 588
Total other expense (10,751) (4,614)
Net loss (30,836) (47,047)
Preferred stock dividends (138) (153)
Warrant modification 0 0
Net loss applicable to common stockholders (30,974) (47,200)
Cash and cash equivalents $ 17,720 $ 15,120