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Condensed Consolidated Statements of Stockholders' Deficit (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Balance at Dec. 31, 2023 $ (33,973) $ 1,503 $ 1,870,525 $ 13 $ (1,906,014)
Balance (in shares) at Dec. 31, 2023   150,285      
Issuance of common stock under equity incentive plan 11 $ 1 10    
Issuance of common stock under equity incentive plan (in shares)   93      
Stock-based compensation expense 3,375   3,375    
Net Income (Loss) (3,160)       (3,160)
Net unrealized loss on short-term investments (19)     (19)  
Comprehensive (loss) income (3,179)        
Balance at Mar. 31, 2024 (33,766) $ 1,504 1,873,910 (6) (1,909,174)
Balance (in shares) at Mar. 31, 2024   150,378      
Balance at Dec. 31, 2023 (33,973) $ 1,503 1,870,525 13 (1,906,014)
Balance (in shares) at Dec. 31, 2023   150,285      
Net Income (Loss) (12,395)        
Net unrealized loss on short-term investments (21)        
Comprehensive (loss) income (12,416)        
Balance at Jun. 30, 2024 (37,940) $ 1,516 1,878,961 (8) (1,918,409)
Balance (in shares) at Jun. 30, 2024   151,578      
Balance at Mar. 31, 2024 (33,766) $ 1,504 1,873,910 (6) (1,909,174)
Balance (in shares) at Mar. 31, 2024   150,378      
Issuance of common stock under equity incentive plan 318 $ 9 309    
Issuance of common stock under equity incentive plan (in shares)   872      
Issuance of common stock under the employee stock purchase plan 175 $ 3 172    
Issuance of common stock under the employee stock purchase plan (in shares)   328      
Stock-based compensation expense 4,570   4,570    
Net Income (Loss) (9,235)       (9,235)
Net unrealized loss on short-term investments (2)     (2)  
Comprehensive (loss) income (9,237)        
Balance at Jun. 30, 2024 (37,940) $ 1,516 1,878,961 (8) (1,918,409)
Balance (in shares) at Jun. 30, 2024   151,578      
Balance at Dec. 31, 2024 (33,651) $ 1,521 1,884,409 13 (1,919,594)
Balance (in shares) at Dec. 31, 2024   152,128      
Issuance of common stock under equity incentive plan 64 $ 3 61    
Issuance of common stock under equity incentive plan (in shares)   299      
Stock-based compensation expense 2,511   2,511    
Net Income (Loss) 2,635       2,635
Net unrealized loss on short-term investments (12)     (12)  
Comprehensive (loss) income 2,623        
Balance at Mar. 31, 2025 (28,453) $ 1,524 1,886,981 (1) (1,916,959)
Balance (in shares) at Mar. 31, 2025   152,427      
Balance at Dec. 31, 2024 (33,651) $ 1,521 1,884,409 13 (1,919,594)
Balance (in shares) at Dec. 31, 2024   152,128      
Net Income (Loss) 254        
Net unrealized loss on short-term investments (14)        
Comprehensive (loss) income 240        
Balance at Jun. 30, 2025 (27,258) $ 1,533 1,890,550 (1) (1,919,340)
Balance (in shares) at Jun. 30, 2025   153,253      
Balance at Mar. 31, 2025 (28,453) $ 1,524 1,886,981 (1) (1,916,959)
Balance (in shares) at Mar. 31, 2025   152,427      
Issuance of common stock under equity incentive plan 194 $ 5 189    
Issuance of common stock under equity incentive plan (in shares)   438      
Issuance of common stock under the employee stock purchase plan 587 $ 4 583    
Issuance of common stock under the employee stock purchase plan (in shares)   388      
Stock-based compensation expense 2,797   2,797    
Net Income (Loss) (2,381)       (2,381)
Net unrealized loss on short-term investments (2)     (2)  
Comprehensive (loss) income (2,383)        
Balance at Jun. 30, 2025 $ (27,258) $ 1,533 $ 1,890,550 $ (1) $ (1,919,340)
Balance (in shares) at Jun. 30, 2025   153,253