v3.25.2
Condensed Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
2021 Sales Agreement [Member]
Common Stock [Member]
Common Stock [Member]
2021 Sales Agreement [Member]
Additional paid-in capital [Member]
Additional paid-in capital [Member]
2021 Sales Agreement [Member]
Accumulated other comprehensive loss [Member]
Accumulated deficit [Member]
Beginning balance at Dec. 31, 2023 $ 14,783   $ 23   $ 603,780   $ (14) $ (589,006)
Beginning balance, shares at Dec. 31, 2023     30,334,000          
Issuance of common stock pursuant to the 2021 Sales Agreement   $ 647       $ 647    
Issuance of common stock pursuant to the 2021 Sales Agreement, shares       702,000        
Stock-based compensation expense from stock options and ESPP shares 509       509      
Net loss (7,643)             (7,643)
Change in unrealized loss on available-for-sale securities, net of tax 4           4  
Ending balance at Mar. 31, 2024 8,300   $ 23   604,936   (10) (596,649)
Ending balance, shares at Mar. 31, 2024     31,036,000          
Beginning balance at Dec. 31, 2023 14,783   $ 23   603,780   (14) (589,006)
Beginning balance, shares at Dec. 31, 2023     30,334,000          
Net loss (11,343)              
Ending balance at Jun. 30, 2024 5,037   $ 23   605,370   (7) (600,349)
Ending balance, shares at Jun. 30, 2024     31,039,000          
Beginning balance at Mar. 31, 2024 8,300   $ 23   604,936   (10) (596,649)
Beginning balance, shares at Mar. 31, 2024     31,036,000          
Issuance of common stock upon exercise of stock options and from the ESPP 3       3      
Issuance of common stock upon exercise of stock options and from the ESPP, Shares     3,000          
Stock-based compensation expense from stock options and ESPP shares 431       431      
Net loss (3,700)             (3,700)
Change in unrealized loss on available-for-sale securities, net of tax 3           3  
Ending balance at Jun. 30, 2024 5,037   $ 23   605,370   (7) (600,349)
Ending balance, shares at Jun. 30, 2024     31,039,000          
Beginning balance at Dec. 31, 2024 9,131   $ 23   606,439   (1) (597,330)
Beginning balance, shares at Dec. 31, 2024     31,042,000          
Stock-based compensation expense from stock options and ESPP shares 452       452      
Net loss (4,232)             (4,232)
Ending balance at Mar. 31, 2025 5,351   $ 23   606,891   (1) (601,562)
Ending balance, shares at Mar. 31, 2025     31,042,000          
Beginning balance at Dec. 31, 2024 9,131   $ 23   606,439   (1) (597,330)
Beginning balance, shares at Dec. 31, 2024     31,042,000          
Net loss (6,497)              
Ending balance at Jun. 30, 2025 3,483   $ 23   607,288   (1) (603,827)
Ending balance, shares at Jun. 30, 2025     31,042,000          
Beginning balance at Mar. 31, 2025 5,351   $ 23   606,891   (1) (601,562)
Beginning balance, shares at Mar. 31, 2025     31,042,000          
Stock-based compensation expense from stock options and ESPP shares 397       397      
Net loss (2,265)             (2,265)
Ending balance at Jun. 30, 2025 $ 3,483   $ 23   $ 607,288   $ (1) $ (603,827)
Ending balance, shares at Jun. 30, 2025     31,042,000