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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Loss
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021   98,381      
Beginning balance at Dec. 31, 2021 $ 316,185 $ 10 $ 964,965 $ (714) $ (648,076)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation expense 20,079   20,079    
Common stock issued upon exercise of stock options, shares (in shares)   15      
Common stock issued upon exercise of stock options 3   3    
Common stock issued under employee stock purchase plan (in shares)   886      
Common stock issued under employee stock purchase plan 604   604    
Common stock issued upon release of restricted stock units (in shares)   835      
Net unrealized loss (gain) on marketable securities (788)     (788)  
Foreign currency translation adjustment (29)     (29)  
Net loss $ (154,536)       (154,536)
Ending balance (in shares) at Dec. 31, 2022 100,117 100,117      
Ending balance at Dec. 31, 2022 $ 181,518 $ 10 985,651 (1,531) (802,612)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation expense $ 17,569   17,569    
Common stock issued upon exercise of stock options, shares (in shares) 1 1      
Common stock issued upon exercise of stock options $ 1   1    
Common stock issued under employee stock purchase plan (in shares)   824      
Common stock issued under employee stock purchase plan 488   488    
Common stock issued upon release of restricted stock units (in shares)   491      
Net unrealized loss (gain) on marketable securities 1,057     1,057  
Foreign currency translation adjustment 1     1  
Net loss $ (117,165)       (117,165)
Ending balance (in shares) at Dec. 31, 2023 101,433 101,433      
Ending balance at Dec. 31, 2023 $ 83,469 $ 10 $ 1,003,709 $ (473) $ (919,777)