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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Private placement
At Market Offering
Common Stock
Common Stock
Private placement
Common Stock
At Market Offering
Additional Paid-In Capital
Additional Paid-In Capital
Private placement
Additional Paid-In Capital
At Market Offering
Accumulated Other Comprehensive Loss
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2023       701,660,053              
Beginning balance at Dec. 31, 2023 $ 77,692     $ 7,017     $ 1,066,381     $ (2,448) $ (993,258)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock under stock purchase plans and exercise of stock options and warrants (in shares)       314,543              
Issuance of common stock under stock purchase plans and exercise of stock options and warrants 485     $ 3     482        
Stock-based compensation 9,507           9,507        
Net other comprehensive gain (loss) (1)                 (1)  
Net loss (43,473)                   (43,473)
Ending balance (in shares) at Mar. 31, 2024       701,974,596              
Ending balance at Mar. 31, 2024 44,210     $ 7,020     1,076,370     (2,449) (1,036,731)
Beginning balance (in shares) at Dec. 31, 2023       701,660,053              
Beginning balance at Dec. 31, 2023 77,692     $ 7,017     1,066,381     (2,448) (993,258)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Net loss (160,112)                    
Ending balance (in shares) at Sep. 30, 2024       737,094,965              
Ending balance at Sep. 30, 2024 437,920     $ 7,371     1,586,227     (2,308) (1,153,370)
Beginning balance (in shares) at Mar. 31, 2024       701,974,596              
Beginning balance at Mar. 31, 2024 44,210     $ 7,020     1,076,370     (2,449) (1,036,731)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Private placement of common stock / Proceeds from at-the-market offering, net of commissions and fees (in shares)         22,222,222            
Private placement of common stock / Proceeds from at-the-market offering, net of commissions and fees   $ 200,000     $ 222     $ 199,778      
Issuance of common stock under stock purchase plans and exercise of stock options and warrants (in shares)       123,383              
Issuance of common stock under stock purchase plans and exercise of stock options and warrants 212     $ 1     211        
Stock-based compensation 11,088           11,088        
Net other comprehensive gain (loss) (50)                 (50)  
Net loss (60,385)                   (60,385)
Ending balance (in shares) at Jun. 30, 2024       724,320,201              
Ending balance at Jun. 30, 2024 195,075     $ 7,243     1,287,447     (2,499) (1,097,116)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Private placement of common stock / Proceeds from at-the-market offering, net of commissions and fees (in shares)         10,352,418 1,807,093          
Private placement of common stock / Proceeds from at-the-market offering, net of commissions and fees   $ 234,860 $ 43,033   $ 104 $ 18   $ 234,756 $ 43,015    
Issuance of common stock under stock purchase plans and exercise of stock options and warrants (in shares)       615,253              
Issuance of common stock under stock purchase plans and exercise of stock options and warrants 1,644     $ 6     1,638        
Stock-based compensation 19,371           19,371        
Net other comprehensive gain (loss) 191                 191  
Net loss (56,254)                   (56,254)
Ending balance (in shares) at Sep. 30, 2024       737,094,965              
Ending balance at Sep. 30, 2024 $ 437,920     $ 7,371     1,586,227     (2,308) (1,153,370)
Beginning balance (in shares) at Dec. 31, 2024 737,626,004     737,626,004              
Beginning balance at Dec. 31, 2024 $ 388,748     $ 7,376     1,598,230     (2,285) (1,214,573)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock under stock purchase plans and exercise of stock options and warrants (in shares)       3,983,386              
Issuance of common stock under stock purchase plans and exercise of stock options and warrants 7,677     $ 40     7,637        
Stock-based compensation 11,096           11,096        
Net other comprehensive gain (loss) (278)                 (278)  
Net loss (62,913)                   (62,913)
Ending balance (in shares) at Mar. 31, 2025       741,609,390              
Ending balance at Mar. 31, 2025 $ 344,330     $ 7,416     1,616,963     (2,563) (1,277,486)
Beginning balance (in shares) at Dec. 31, 2024 737,626,004     737,626,004              
Beginning balance at Dec. 31, 2024 $ 388,748     $ 7,376     1,598,230     (2,285) (1,214,573)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Net loss $ (860,414)                    
Ending balance (in shares) at Sep. 30, 2025 744,442,533     744,442,533              
Ending balance at Sep. 30, 2025 $ 192,263     $ 7,444     2,262,515     (2,709) (2,074,987)
Beginning balance (in shares) at Mar. 31, 2025       741,609,390              
Beginning balance at Mar. 31, 2025 344,330     $ 7,416     1,616,963     (2,563) (1,277,486)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Issuance of common stock under stock purchase plans and exercise of stock options and warrants (in shares)       1,197,282              
Issuance of common stock under stock purchase plans and exercise of stock options and warrants 2,222     $ 12     2,210        
Stock-based compensation 478,784           478,784        
Net other comprehensive gain (loss) (189)                 (189)  
Net loss (565,708)                   (565,708)
Ending balance (in shares) at Jun. 30, 2025       742,806,672              
Ending balance at Jun. 30, 2025 259,439     $ 7,428     2,097,957     (2,752) (1,843,194)
Increase (Decrease) in Stockholders' Equity [Roll Forward]                      
Private placement of common stock / Proceeds from at-the-market offering, net of commissions and fees (in shares)           1,322,793          
Private placement of common stock / Proceeds from at-the-market offering, net of commissions and fees     $ 31,764     $ 13     $ 31,751    
Issuance of common stock under stock purchase plans and exercise of stock options and warrants (in shares)       313,068              
Issuance of common stock under stock purchase plans and exercise of stock options and warrants 2,049     $ 3     2,046        
Stock-based compensation 130,761           130,761        
Net other comprehensive gain (loss) 43                 43  
Net loss $ (231,793)                   (231,793)
Ending balance (in shares) at Sep. 30, 2025 744,442,533     744,442,533              
Ending balance at Sep. 30, 2025 $ 192,263     $ 7,444     $ 2,262,515     $ (2,709) $ (2,074,987)