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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2020 $ 627,009 $ 16 $ 2,612,663 $ (1,985,706) $ 36
Issuance of common stock from exercise of stock options and units     10,060    
Issuance of common stock pursuant to employee stock purchase plan     3,737    
Stock-based compensation     50,962    
Net loss (124,776)     (124,776)  
Other comprehensive (loss) income         37
Ending balance at Sep. 30, 2021 566,955 16 2,677,422 (2,110,482) 1
Beginning balance at Jun. 30, 2021 564,838 16 2,660,809 (2,096,025) 38
Issuance of common stock from exercise of stock options and units     1,066    
Issuance of common stock pursuant to employee stock purchase plan     0    
Stock-based compensation     15,547    
Net loss (14,457)     (14,457)  
Other comprehensive (loss) income         39
Ending balance at Sep. 30, 2021 566,955 16 2,677,422 (2,110,482) 1
Beginning balance at Dec. 31, 2021 540,894 16 2,694,646 (2,153,576) (192)
Issuance of common stock from exercise of stock options and units     3,560    
Issuance of common stock pursuant to employee stock purchase plan     3,025    
Stock-based compensation     53,630    
Net loss (174,250)     (174,250)  
Other comprehensive (loss) income         (1,173)
Ending balance at Sep. 30, 2022 425,686 16 2,754,861 (2,327,826) (1,365)
Beginning balance at Jun. 30, 2022 434,848 16 2,736,318 (2,300,643) (843)
Issuance of common stock from exercise of stock options and units     287    
Issuance of common stock pursuant to employee stock purchase plan     0    
Stock-based compensation     18,256    
Net loss (27,183)     (27,183)  
Other comprehensive (loss) income         (522)
Ending balance at Sep. 30, 2022 $ 425,686 $ 16 $ 2,754,861 $ (2,327,826) $ (1,365)