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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021   65,109,000    
Beginning balance at Dec. 31, 2021 $ 164,391 $ 6 $ 552,083 $ (387,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Exercise of stock options (in shares) 252,100 252,000    
Exercise of stock options $ 612   612  
Release of stock awards (in shares)   332,000    
Employee stock-based compensation 11,467   11,467  
Non-employee stock-based compensation 133   133  
Taxes paid related to net share settlement of equity awards (in shares)   (80,000)    
Taxes paid related to net share settlement of equity awards (1,484)   (1,484)  
Net loss (20,988)     (20,988)
Ending balance (in shares) at Sep. 30, 2022   65,613,000    
Ending balance at Sep. 30, 2022 154,131 $ 6 562,811 (408,686)
Beginning balance (in shares) at Jun. 30, 2022   65,494,000    
Beginning balance at Jun. 30, 2022 159,459 $ 6 558,147 (398,694)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Exercise of stock options (in shares)   77,000    
Exercise of stock options 180   180  
Release of stock awards (in shares)   47,000    
Employee stock-based compensation 4,516   4,516  
Non-employee stock-based compensation 15   15  
Taxes paid related to net share settlement of equity awards (in shares)   (5,000)    
Taxes paid related to net share settlement of equity awards (47)   (47)  
Net loss (9,992)     (9,992)
Ending balance (in shares) at Sep. 30, 2022   65,613,000    
Ending balance at Sep. 30, 2022 154,131 $ 6 562,811 (408,686)
Beginning balance (in shares) at Dec. 31, 2022   65,811,000    
Beginning balance at Dec. 31, 2022 $ 144,797 $ 6 566,081 (421,290)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Exercise of stock options (in shares) 214,284 214,000    
Exercise of stock options $ 422   422  
Release of stock awards (in shares)   787,000    
Employee stock-based compensation 7,808   7,808  
Issuance of common stock, net of issuance costs (shares)   3,080,000    
Issuance of common stock, net of issuance costs 7,931   7,931  
Taxes paid related to net share settlement of equity awards (in shares)   (65,000)    
Taxes paid related to net share settlement of equity awards (404)   (404)  
Net loss (69,048)     (69,048)
Ending balance (in shares) at Sep. 30, 2023   69,827,000    
Ending balance at Sep. 30, 2023 91,506 $ 6 581,838 (490,338)
Beginning balance (in shares) at Jun. 30, 2023   69,804,000    
Beginning balance at Jun. 30, 2023 124,131 $ 6 579,555 (455,430)
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Release of stock awards (in shares)   23,000    
Employee stock-based compensation 2,283   2,283  
Net loss (34,908)     (34,908)
Ending balance (in shares) at Sep. 30, 2023   69,827,000    
Ending balance at Sep. 30, 2023 $ 91,506 $ 6 $ 581,838 $ (490,338)