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Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
Total
Common stock
Preferred stock
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive loss
Treasury stock
Series A-1 Preferred Stock
Series A-1 Preferred Stock
Preferred stock
Series B Preferred Stock
Preferred stock
Increase (Decrease) in Stockholders' Equity                    
Preferred stock, outstanding (in shares)                   357,000
Beginning balance (in shares) at Dec. 31, 2021   46,625,000         3,602,000      
Increase (Decrease) in Stockholders' Equity                    
Common stock issued upon vesting of restricted stock   264,000                
Common stock issued for ESPP purchases   84,000                
Conversion of preferred stock   4,098,000                
Repurchases of common stock             1,652,000   7,000  
Tax withholding upon vesting of employee stock awards             77,000      
Ending balance (in shares) at Sep. 30, 2022   51,071,000         5,331,000      
Beginning balance at Dec. 31, 2021   $ 4,000                
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock   1,000                
Ending balance at Sep. 30, 2022   $ 5,000                
Beginning balance (in shares) at Dec. 31, 2021                 4,204,000  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 4,204,000 357,000
Ending balance (in shares) at Sep. 30, 2022                 0  
Beginning balance (in shares) at Dec. 31, 2021                 0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock               7,244 (7,000)  
Ending balance (in shares) at Sep. 30, 2022                 0  
Beginning balance at Dec. 31, 2021       $ 960,544,000 $ (136,590,000) $ (537,000) $ (79,035,000)      
Increase (Decrease) in Stockholders' Equity                    
Stock-based compensation to employees and directors       13,390,000            
Common stock issued for ESPP purchases       2,779,000            
Conversion and elimination of preferred stock       1,043,000            
Other       34,000            
Net loss $ (19,725,000)       (19,725,000)          
Dividend issued upon conversion and elimination of preferred stock         (1,697,000)          
Conversion and elimination of preferred stock         (306,000)          
Net other comprehensive income 12,000         12,000        
Repurchases of common and Series A-1 preferred stock             60,077,000      
Tax withholding upon vesting of employee stock awards             3,501,000      
Conversion and elimination of preferred stock         306,000   (306,000)      
Ending balance at Sep. 30, 2022 676,645,000     977,790,000 (158,318,000) (525,000) $ (142,307,000)      
Increase (Decrease) in Stockholders' Equity                    
Preferred stock, outstanding (in shares)                   0
Beginning balance (in shares) at Jun. 30, 2022   51,026,000         5,331,000      
Increase (Decrease) in Stockholders' Equity                    
Common stock issued upon vesting of restricted stock   3,000                
Common stock issued for ESPP purchases   42,000                
Conversion of preferred stock   0                
Repurchases of common stock             0   0  
Tax withholding upon vesting of employee stock awards             0      
Ending balance (in shares) at Sep. 30, 2022   51,071,000         5,331,000      
Beginning balance at Jun. 30, 2022   $ 5,000                
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock   0                
Ending balance at Sep. 30, 2022   $ 5,000                
Beginning balance (in shares) at Jun. 30, 2022                 0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 0 0
Ending balance (in shares) at Sep. 30, 2022                 0  
Beginning balance (in shares) at Jun. 30, 2022                 0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 0  
Ending balance (in shares) at Sep. 30, 2022                 0  
Beginning balance at Jun. 30, 2022       972,845,000 (121,323,000) (529,000) $ (142,288,000)      
Increase (Decrease) in Stockholders' Equity                    
Stock-based compensation to employees and directors       4,056,000            
Common stock issued for ESPP purchases       889,000            
Conversion and elimination of preferred stock       0            
Other       0            
Net loss (36,995,000)       (36,995,000)          
Dividend issued upon conversion and elimination of preferred stock         0          
Conversion and elimination of preferred stock         0          
Net other comprehensive income 4,000         4,000        
Repurchases of common and Series A-1 preferred stock             0      
Tax withholding upon vesting of employee stock awards             19,000      
Conversion and elimination of preferred stock             0      
Ending balance at Sep. 30, 2022 $ 676,645,000     977,790,000 (158,318,000) (525,000) $ (142,307,000)      
Increase (Decrease) in Stockholders' Equity                    
Common stock, shares outstanding (in shares)   45,740,000                
Preferred stock, outstanding (in shares)                 0 0
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none     $ 0              
Common stock, shares outstanding (in shares) 44,951,000                  
Preferred stock, outstanding (in shares) 0                 0
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none $ 0                  
Beginning balance (in shares) at Dec. 31, 2022   51,102,000         6,151,000      
Increase (Decrease) in Stockholders' Equity                    
Common stock issued upon vesting of restricted stock   365,000                
Common stock issued for ESPP purchases   118,000                
Conversion of preferred stock   0                
Repurchases of common stock             0   0  
Tax withholding upon vesting of employee stock awards             129,000      
Ending balance (in shares) at Sep. 30, 2023   51,585,000         6,280,000      
Beginning balance at Dec. 31, 2022   $ 5,000                
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock   0                
Ending balance at Sep. 30, 2023   $ 5,000                
Beginning balance (in shares) at Dec. 31, 2022 0               0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 0 0
Ending balance (in shares) at Sep. 30, 2023 0               0  
Beginning balance (in shares) at Dec. 31, 2022                 0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 0  
Ending balance (in shares) at Sep. 30, 2023                 0  
Beginning balance at Dec. 31, 2022 $ 645,826,000     982,718,000 (173,829,000) (522,000) $ (162,546,000)      
Increase (Decrease) in Stockholders' Equity                    
Stock-based compensation to employees and directors       17,863,000            
Common stock issued for ESPP purchases       1,913,000            
Conversion and elimination of preferred stock       0            
Other       0            
Net loss (146,849,000)       (146,849,000)          
Dividend issued upon conversion and elimination of preferred stock         0          
Conversion and elimination of preferred stock         0          
Net other comprehensive income 12,000         12,000        
Repurchases of common and Series A-1 preferred stock             0      
Tax withholding upon vesting of employee stock awards             2,581,000      
Conversion and elimination of preferred stock             0      
Ending balance at Sep. 30, 2023 $ 516,184,000     1,002,494,000 (320,678,000) (510,000) $ (165,127,000)      
Increase (Decrease) in Stockholders' Equity                    
Preferred stock, outstanding (in shares)                   0
Beginning balance (in shares) at Jun. 30, 2023   51,455,000         6,253,000      
Increase (Decrease) in Stockholders' Equity                    
Common stock issued upon vesting of restricted stock   80,000                
Common stock issued for ESPP purchases   50,000                
Conversion of preferred stock   0                
Repurchases of common stock             0   0  
Tax withholding upon vesting of employee stock awards             27,000      
Ending balance (in shares) at Sep. 30, 2023   51,585,000         6,280,000      
Beginning balance at Jun. 30, 2023   $ 5,000                
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock   0                
Ending balance at Sep. 30, 2023   $ 5,000                
Beginning balance (in shares) at Jun. 30, 2023                 0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 0 0
Ending balance (in shares) at Sep. 30, 2023 0               0  
Beginning balance (in shares) at Jun. 30, 2023                 0  
Increase (Decrease) in Stockholders' Equity                    
Conversion and elimination of preferred stock                 0  
Ending balance (in shares) at Sep. 30, 2023                 0  
Beginning balance at Jun. 30, 2023       995,904,000 (257,629,000) (514,000) $ (164,600,000)      
Increase (Decrease) in Stockholders' Equity                    
Stock-based compensation to employees and directors       5,798,000            
Common stock issued for ESPP purchases       792,000            
Conversion and elimination of preferred stock       0            
Other       0            
Net loss $ (63,049,000)       (63,049,000)          
Dividend issued upon conversion and elimination of preferred stock         0          
Conversion and elimination of preferred stock         0          
Net other comprehensive income 4,000         4,000        
Repurchases of common and Series A-1 preferred stock             0      
Tax withholding upon vesting of employee stock awards             527,000      
Conversion and elimination of preferred stock             0      
Ending balance at Sep. 30, 2023 $ 516,184,000     $ 1,002,494,000 $ (320,678,000) $ (510,000) $ (165,127,000)      
Increase (Decrease) in Stockholders' Equity                    
Common stock, shares outstanding (in shares) 45,305,000 45,305,000                
Preferred stock, outstanding (in shares) 0               0 0
Preferred stock, $0.0001 par value, authorized shares - 5,000, issued and outstanding - none $ 0   $ 0