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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2022   61,701,467      
Beginning balance at Dec. 31, 2022 $ 142,013 $ 617 $ 1,235,095 $ (1,093,694) $ (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Share-based compensation 4,788   4,788    
Stock plan activity (in shares)   42,098      
Stock plan related activity (154)   (154)    
Issuance of common stock, net of offering costs (in shares)   95,000      
Issuance of common stock, net of offering costs 617 $ 1 616    
Unrealized gain (loss) on investments 13       13
Net loss (38,009)     (38,009)  
Ending balance (in shares) at Mar. 31, 2023   61,838,565      
Ending balance at Mar. 31, 2023 109,268 $ 618 1,240,345 (1,131,703) 8
Beginning balance (in shares) at Dec. 31, 2023   62,070,627      
Beginning balance at Dec. 31, 2023 152,613 $ 621 1,254,750 (1,102,752) (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Share-based compensation $ 5,512   5,512    
Stock plan related activity   $ 5      
Shares, Granted (in shares) 1,654,555        
Stock plan activity (in shares)   489,875      
Stock plan related activity $ 248   243    
Unrealized gain (loss) on investments (29)       (29)
Net loss (52,190)     (52,190)  
Ending balance (in shares) at Mar. 31, 2024   62,560,502      
Ending balance at Mar. 31, 2024 $ 106,154 $ 626 $ 1,260,505 $ (1,154,942) $ (35)