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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) 77,600 78,000    
Exercise of stock options $ 181   181  
Release of stock awards (in shares)   190,000    
Employee stock-based compensation 3,777   3,777  
Non-employee stock-based compensation 61   61  
Taxes paid related to net share settlement of equity awards (in shares)   (73,000)    
Taxes paid related to net share settlement of equity awards (1,419)   (1,419)  
Net loss (8,356)     (8,356)
Ending balance (in shares) at Mar. 31, 2022   65,304,000    
Ending balance at Mar. 31, 2022 158,635 $ 6 554,683 (396,054)
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) 142,856 143,000    
Exercise of stock options $ 281   281  
Release of stock awards (in shares)   479,000    
Employee stock-based compensation 2,809   2,809  
Issuance of common stock, net of issuance costs (in shares)   328,000    
Issuance of common stock, net of issuance costs of $390 1,150   1,150  
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 (22,617)     (22,617)
Ending balance (in shares) at Mar. 31, 2023   66,696,000    
Ending balance at Mar. 31, 2023 $ 126,016 $ 6 $ 569,917 $ (443,907)