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Condensed Consolidated Statements of Changes in Convertible Preferred Stock and Stockholders’ Equity (Deficit) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Deficit
Series X Convertible Preferred Stock
Series X Convertible Preferred Stock
Preferred Stock
Balance, beginning (in shares) at Dec. 31, 2020           1,044,278
Balance, beginning at Dec. 31, 2020 $ 10,715 $ 4 $ 345,411 $ (334,700)   $ 0
Balance, beginning (in shares) at Dec. 31, 2020   44,876,408        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Public offering of common stock, net of issuance costs (in shares)   3,327,706        
Public offering of common stock, net of issuance costs 8,589 $ 1 8,588      
Issuance of common stock for exercise of options (in shares)   486        
Issuance of common stock for exercise of options 1   1      
Issuance of common stock for restricted share units vested (in shares)   84,070        
Stock-based compensation 879   879      
Net income (loss) (18,292)     (18,292)    
Balance, ending (in shares) at Mar. 31, 2021           1,044,278
Balance, ending at Mar. 31, 2021 1,892 $ 5 354,879 (352,992)   $ 0
Balance, ending (in shares) at Mar. 31, 2021   48,288,670        
Balance, beginning (in shares) at Dec. 31, 2020           1,044,278
Balance, beginning at Dec. 31, 2020 10,715 $ 4 345,411 (334,700)   $ 0
Balance, beginning (in shares) at Dec. 31, 2020   44,876,408        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock under Employee Stock Purchase Plan 252          
Net income (loss) (25,664)          
Balance, ending (in shares) at Sep. 30, 2021           1,044,278
Balance, ending at Sep. 30, 2021 (1,158) $ 5 359,201 (360,364)   $ 0
Balance, ending (in shares) at Sep. 30, 2021   49,621,543        
Balance, beginning (in shares) at Mar. 31, 2021           1,044,278
Balance, beginning at Mar. 31, 2021 1,892 $ 5 354,879 (352,992)   $ 0
Balance, beginning (in shares) at Mar. 31, 2021   48,288,670        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Public offering of common stock, net of issuance costs (in shares)   1,050,928        
Public offering of common stock, net of issuance costs 2,058   2,058      
Issuance of common stock for exercise of options (in shares)   2,444        
Issuance of common stock for exercise of options 5   5      
Issuance of common stock for restricted share units vested (in shares)   18,530        
Issuance of common stock under Employee Stock Purchase Plan (in shares)   145,696        
Issuance of common stock under Employee Stock Purchase Plan 252   252      
Stock-based compensation 871   871      
Net income (loss) 10,711     10,711    
Balance, ending (in shares) at Jun. 30, 2021           1,044,278
Balance, ending at Jun. 30, 2021 15,789 $ 5 358,065 (342,281)   $ 0
Balance, ending (in shares) at Jun. 30, 2021   49,506,268        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Public offering of common stock, net of issuance costs (in shares)   113,400        
Public offering of common stock, net of issuance costs 235   235      
Issuance of common stock for restricted share units vested (in shares)   1,875        
Stock-based compensation 901   901      
Net income (loss) (18,083)     (18,083)    
Balance, ending (in shares) at Sep. 30, 2021           1,044,278
Balance, ending at Sep. 30, 2021 (1,158) $ 5 359,201 (360,364)   $ 0
Balance, ending (in shares) at Sep. 30, 2021   49,621,543        
Balance, beginning (in shares) at Dec. 31, 2021         1,818,472 1,818,472
Balance, beginning at Dec. 31, 2021 $ 21,573 $ 7 398,733 (377,167)   $ 0
Balance, beginning (in shares) at Dec. 31, 2021 67,863,674 67,863,674        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Public offering of common stock, net of issuance costs (in shares)   644,265        
Public offering of common stock, net of issuance costs $ 500   500      
Issuance of common stock for restricted share units vested (in shares)   541,308        
Stock-based compensation 1,165   1,165      
Net income (loss) (18,281)     (18,281)    
Balance, ending (in shares) at Mar. 31, 2022           1,818,472
Balance, ending at Mar. 31, 2022 4,957 $ 7 400,398 (395,448)   $ 0
Balance, ending (in shares) at Mar. 31, 2022   69,049,247        
Balance, beginning (in shares) at Dec. 31, 2021         1,818,472 1,818,472
Balance, beginning at Dec. 31, 2021 $ 21,573 $ 7 398,733 (377,167)   $ 0
Balance, beginning (in shares) at Dec. 31, 2021 67,863,674 67,863,674        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock for exercise of options (in shares) 0          
Issuance of common stock under Employee Stock Purchase Plan $ 69          
Net income (loss) (16,422)          
Balance, ending (in shares) at Sep. 30, 2022         1,870,713 1,818,472
Balance, ending at Sep. 30, 2022 $ 9,067 $ 7 402,649 (393,589)   $ 0
Balance, ending (in shares) at Sep. 30, 2022 71,181,197 71,181,197        
Balance, beginning (in shares) at Mar. 31, 2022           1,818,472
Balance, beginning at Mar. 31, 2022 $ 4,957 $ 7 400,398 (395,448)   $ 0
Balance, beginning (in shares) at Mar. 31, 2022   69,049,247        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of common stock for restricted share units vested (in shares)   5,042        
Issuance of common stock under Employee Stock Purchase Plan (in shares)   184,219        
Issuance of common stock under Employee Stock Purchase Plan 69   69      
Stock-based compensation 852   852      
Issuance costs for underwritten public offering (720)   (720)      
Net income (loss) (13,119)     (13,119)    
Balance, ending (in shares) at Jun. 30, 2022           1,818,472
Balance, ending at Jun. 30, 2022 (7,961) $ 7 400,599 (408,567)   $ 0
Balance, ending (in shares) at Jun. 30, 2022   69,238,508        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Public offering of common stock, net of issuance costs (in shares)   1,664,170        
Public offering of common stock, net of issuance costs 1,208   1,208      
Issuance of common stock for restricted share units vested (in shares)   278,519        
Stock-based compensation 842   842      
Net income (loss) 14,978     14,978    
Balance, ending (in shares) at Sep. 30, 2022         1,870,713 1,818,472
Balance, ending at Sep. 30, 2022 $ 9,067 $ 7 $ 402,649 $ (393,589)   $ 0
Balance, ending (in shares) at Sep. 30, 2022 71,181,197 71,181,197