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Condensed Consolidated Statements of Stockholders’ Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive (Loss)/Income
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021   98,381,000      
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 5,381   5,381    
Common stock issued upon exercise of stock options (in shares)   15,000      
Common stock issued upon exercise of stock options 3   3    
Common stock issued upon release of restricted stock units (in shares)   371,000      
Foreign currency translation adjustments 14     14  
Unrealized gain on marketable securities, net (723)     (723)  
Net loss (37,908)       (37,908)
Ending balance (in shares) at Mar. 31, 2022   98,767,000      
Ending balance at Mar. 31, 2022 282,952 $ 10 970,349 (1,423) (685,984)
Beginning balance (in shares) at Dec. 31, 2021   98,381,000      
Beginning balance at Dec. 31, 2021 316,185 $ 10 964,965 (714) (648,076)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Foreign currency translation adjustments (20)        
Unrealized gain on marketable securities, net (1,062)        
Net loss (81,669)        
Ending balance (in shares) at Jun. 30, 2022   99,271,000      
Ending balance at Jun. 30, 2022 244,122 $ 10 975,653 (1,796) (729,745)
Beginning balance (in shares) at Mar. 31, 2022   98,767,000      
Beginning balance at Mar. 31, 2022 282,952 $ 10 970,349 (1,423) (685,984)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation expense 4,942   4,942    
Common stock issued upon release of restricted stock units (in shares)   5,000      
Common stock issued under employee stock purchase plan (in shares)   499,000      
Common stock issued under employee stock purchase plan 362   362    
Foreign currency translation adjustments (34)     (34)  
Unrealized gain on marketable securities, net (339)     (339)  
Net loss (43,761)       (43,761)
Ending balance (in shares) at Jun. 30, 2022   99,271,000      
Ending balance at Jun. 30, 2022 244,122 $ 10 975,653 (1,796) (729,745)
Beginning balance (in shares) at Dec. 31, 2022   100,117,000      
Beginning 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 4,563   4,563    
Common stock issued upon release of restricted stock units (in shares)   456,000      
Foreign currency translation adjustments (7)     (7)  
Unrealized gain on marketable securities, net 739     739  
Net loss (29,056)       (29,056)
Ending balance (in shares) at Mar. 31, 2023   100,573,000      
Ending balance at Mar. 31, 2023 157,757 $ 10 990,214 (799) (831,668)
Beginning balance (in shares) at Dec. 31, 2022   100,117,000      
Beginning balance at Dec. 31, 2022 $ 181,518 $ 10 985,651 (1,531) (802,612)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Common stock issued upon exercise of stock options (in shares) 0        
Foreign currency translation adjustments $ (12)        
Unrealized gain on marketable securities, net 937        
Net loss (60,566)        
Ending balance (in shares) at Jun. 30, 2023   100,993,000      
Ending balance at Jun. 30, 2023 131,155 $ 10 994,929 (606) (863,178)
Beginning balance (in shares) at Mar. 31, 2023   100,573,000      
Beginning balance at Mar. 31, 2023 157,757 $ 10 990,214 (799) (831,668)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock-based compensation expense 4,469   4,469    
Common stock issued upon release of restricted stock units (in shares)   2,000      
Common stock issued under employee stock purchase plan (in shares)   418,000      
Common stock issued under employee stock purchase plan 246   246    
Foreign currency translation adjustments (5)     (5)  
Unrealized gain on marketable securities, net 198     198  
Net loss (31,510)       (31,510)
Ending balance (in shares) at Jun. 30, 2023   100,993,000      
Ending balance at Jun. 30, 2023 $ 131,155 $ 10 $ 994,929 $ (606) $ (863,178)