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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
Total
Common stock
Preferred stock
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive loss
Treasury stock
Beginning balance (in shares) at Dec. 31, 2022   51,102         6,151
Increase (Decrease) in Stockholders' Equity              
Common stock issued upon vesting of restricted stock   365          
Common stock issued for ESPP purchases   118          
Tax withholding upon vesting of employee stock awards             129
Ending balance (in shares) at Sep. 30, 2023   51,585         6,280
Ending balance at Sep. 30, 2023   $ 5          
Beginning balance at Dec. 31, 2022   $ 5          
Beginning balance at Dec. 31, 2022       $ 982,718 $ (173,829) $ (522) $ (162,546)
Increase (Decrease) in Stockholders' Equity              
Stock-based compensation to employees and directors       17,863      
Common stock issued for ESPP purchases       1,913      
Net loss $ (146,849)       (146,849)    
Net other comprehensive income 12         12  
Tax withholding upon vesting of employee stock awards             2,581
Ending balance at Sep. 30, 2023 516,184     1,002,494 (320,678) (510) $ (165,127)
Beginning balance (in shares) at Jun. 30, 2023   51,455         6,253
Increase (Decrease) in Stockholders' Equity              
Common stock issued upon vesting of restricted stock   80          
Common stock issued for ESPP purchases   50          
Tax withholding upon vesting of employee stock awards             27
Ending balance (in shares) at Sep. 30, 2023   51,585         6,280
Ending balance at Sep. 30, 2023   $ 5          
Beginning balance at Jun. 30, 2023       995,904 (257,629) (514) $ (164,600)
Increase (Decrease) in Stockholders' Equity              
Stock-based compensation to employees and directors       5,798      
Common stock issued for ESPP purchases       792      
Net loss (63,049)       (63,049)    
Net other comprehensive income 4         4  
Tax withholding upon vesting of employee stock awards             527
Ending balance at Sep. 30, 2023 $ 516,184     1,002,494 (320,678) (510) $ (165,127)
Increase (Decrease) in Stockholders' Equity              
Common stock, shares outstanding (in shares)   45,305          
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none     $ 0        
Common stock, shares outstanding (in shares) 45,414            
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none $ 0            
Beginning balance (in shares) at Dec. 31, 2023   51,770         6,356
Increase (Decrease) in Stockholders' Equity              
Common stock issued upon vesting of restricted stock   410          
Common stock issued for ESPP purchases   119          
Tax withholding upon vesting of employee stock awards             126
Ending balance (in shares) at Sep. 30, 2024   52,299         6,482
Ending balance at Sep. 30, 2024   $ 5          
Beginning balance at Dec. 31, 2023   $ 5          
Beginning balance at Dec. 31, 2023 359,132     1,007,649 (481,671) (506) $ (166,345)
Increase (Decrease) in Stockholders' Equity              
Stock-based compensation to employees and directors       16,384      
Common stock issued for ESPP purchases       1,472      
Net loss (177,536)       (177,536)    
Net other comprehensive income 12         12  
Tax withholding upon vesting of employee stock awards             3,271
Ending balance at Sep. 30, 2024 196,193     1,025,505 (659,207) (494) $ (169,616)
Beginning balance (in shares) at Jun. 30, 2024   52,230         6,480
Increase (Decrease) in Stockholders' Equity              
Common stock issued upon vesting of restricted stock   6          
Common stock issued for ESPP purchases   63          
Tax withholding upon vesting of employee stock awards             2
Ending balance (in shares) at Sep. 30, 2024   52,299         6,482
Ending balance at Sep. 30, 2024   $ 5          
Beginning balance at Jun. 30, 2024       1,018,619 (598,177) (498) $ (169,595)
Increase (Decrease) in Stockholders' Equity              
Stock-based compensation to employees and directors       6,349      
Common stock issued for ESPP purchases       537      
Net loss (61,030)       (61,030)    
Net other comprehensive income 4         4  
Tax withholding upon vesting of employee stock awards             21
Ending balance at Sep. 30, 2024 $ 196,193     $ 1,025,505 $ (659,207) $ (494) $ (169,616)
Increase (Decrease) in Stockholders' Equity              
Common stock, shares outstanding (in shares) 45,817 45,817          
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none $ 0   $ 0