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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Warrants
Other Comprehensive Gain (Loss)
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2022   281,108,273        
Beginning balance at Dec. 31, 2022 $ 123,047 $ 2,815 $ 2,664,744 $ 83 $ (12,105) $ (2,532,490)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares)   384,108        
Stock options exercised, net 2,655 $ 3 2,652      
Vesting of restricted stock units, net of taxes (in shares)   1,612,975        
Vesting of restricted stock units, net of taxes (12,806)   (12,806)      
Stock-based compensation 34,894   34,894      
Issuance of shares in connection with at-the-market offering, net of issuance costs (in shares)   195,229        
Issuance of shares in connection with at-the-market offering, net of issuance costs 2,354 $ 2 2,352      
Unrealized loss on available-for-sale securities (85)       (85)  
Foreign currency translation adjustment 5,446       5,446  
Net loss (52,932)         (52,932)
Ending balance (in shares) at Mar. 31, 2023   283,300,585        
Ending balance at Mar. 31, 2023 $ 102,573 $ 2,820 2,691,836 83 (6,744) (2,585,422)
Beginning balance (in shares) at Dec. 31, 2023 293,594,209 293,594,209        
Beginning balance at Dec. 31, 2023 $ 160,174 $ 2,918 2,836,018 71 5,241 (2,684,074)
Increase (Decrease) in Stockholders' Equity            
Stock options exercised, net (in shares) 439,000 444,497        
Stock options exercised, net $ 3,454 $ 4 3,450      
Vesting of restricted stock units, net of taxes (in shares)   2,120,711        
Vesting of restricted stock units, net of taxes (16,721)   (16,721)      
Stock-based compensation 30,803   30,803      
Unrealized loss on available-for-sale securities (15)       (15)  
Foreign currency translation adjustment 1,418       1,418  
Net loss $ (48,419)         (48,419)
Ending balance (in shares) at Mar. 31, 2024 296,159,417 296,159,417        
Ending balance at Mar. 31, 2024 $ 130,694 $ 2,922 $ 2,853,550 $ 71 $ 6,644 $ (2,732,493)