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Condensed Consolidated Statements of Stockholders' Deficit - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income
Accumulated Deficit
Balance at Dec. 31, 2021 $ (106,986) $ 1,843 $ 1,098,498 $ 177 $ (1,207,504)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (74,196)       (74,196)
Other comprehensive income (loss) 9     9  
Employee stock purchase plan sales, net 1,504 1 1,503    
Exercise of stock options, net 5,853 12 5,841    
Stock-based compensation expense 9,601   9,601    
Balance at Mar. 31, 2022 (164,215) 1,856 1,115,443 186 (1,281,700)
Balance at Dec. 31, 2021 (106,986) 1,843 1,098,498 177 (1,207,504)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (175,575)        
Balance at Sep. 30, 2022 (242,659) 1,864 1,138,654 (98) (1,383,079)
Balance at Mar. 31, 2022 (164,215) 1,856 1,115,443 186 (1,281,700)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (58,859)       (58,859)
Other comprehensive income (loss) (171)     (171)  
Exercise of warrants 3 3      
Exercise of stock options, net 145   145    
Stock-based compensation expense 9,865   9,865    
Balance at Jun. 30, 2022 (213,232) 1,859 1,125,453 15 (1,340,559)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (42,520)       (42,520)
Other comprehensive income (loss) (113)     (113)  
Employee stock purchase plan sales, net 1,357 1 1,356    
Exercise of stock options, net 1,896 4 1,892    
Stock-based compensation expense 9,953   9,953    
Balance at Sep. 30, 2022 (242,659) 1,864 1,138,654 (98) (1,383,079)
Balance at Dec. 31, 2022 (294,597) 1,879 1,158,118 26 (1,454,620)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (53,333)       (53,333)
Other comprehensive income (loss) 559     559  
Employee stock purchase plan sales, net 1,575 2 1,573    
Exercise of stock options, net 3,502 8 3,494    
Stock-based compensation expense 14,007   14,007    
Balance at Mar. 31, 2023 (328,287) 1,889 1,177,192 585 (1,507,953)
Balance at Dec. 31, 2022 (294,597) 1,879 1,158,118 26 (1,454,620)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (164,808)        
Balance at Sep. 30, 2023 (410,986) 1,898 1,205,744 800 (1,619,428)
Balance at Mar. 31, 2023 (328,287) 1,889 1,177,192 585 (1,507,953)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (75,326)       (75,326)
Other comprehensive income (loss) 105     105  
Exercise of stock options, net 1,954 6 1,948    
Stock-based compensation expense 12,841   12,841    
Balance at Jun. 30, 2023 (388,713) 1,895 1,191,981 690 (1,583,279)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (36,149)       (36,149)
Other comprehensive income (loss) 110     110  
Employee stock purchase plan sales, net 1,020 2 1,018    
Exercise of stock options, net 467 1 466    
Stock-based compensation expense 12,279   12,279    
Balance at Sep. 30, 2023 $ (410,986) $ 1,898 $ 1,205,744 $ 800 $ (1,619,428)