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Loss per common share
3 Months Ended
Mar. 31, 2023
Earnings Per Share [Abstract]  
Loss per common share
11. Loss per common share
The following table sets forth the computation of basic and diluted loss per common share (each adjusted to account for the Reverse Stock Split) for the periods presented (in thousands, except per share amounts):
 
     Three Months Ended March 31,  
             2023                      2022          
Numerator:
                 
Net income (loss) from continuing operations
   $ (2,310    $ (17,875
Net income (loss) from discontinued operations
     (1,293      (31,146
    
 
 
    
 
 
 
Net loss
   $ (3,603    $ (49,021
    
 
 
    
 
 
 
Denominator:
                 
Weighted average common shares for basic loss per common share
     9,754        8,614  
Effect of dilutive securities
     —          —    
    
 
 
    
 
 
 
Weighted average common shares for diluted loss per common share
   $ 9,754      $ 8,614  
    
 
 
    
 
 
 
     
Income (loss) per common share, continuing operations
                 
Basic
   $ (0.24    $ (2.08
Diluted
     (0.24      (2.08
Income (loss) per common share, discontinued operations
                 
Basic
   $ (0.13    $ (3.62
Diluted
     (0.13      (3.62
Since we reported a net loss for the three months ended March 31, 2023 and 2022, our potentially dilutive securities are deemed to be anti-dilutive, accordingly, there was no effect of dilutive securities. Therefore, our basic and diluted loss per common share and our basic and diluted weighted average common share are the same for the three months ended March 31, 2023 and 2022.
The following table sets forth the outstanding securities as of the periods presented which were not included in the calculation of diluted earnings per common share during the respective three months ended March 31, 2023 and 2022 (in thousands):
 
     As of March 31,  
     2023      2022  
Stock options
     103        316  
RSUs
     177        339  
PSUs
     19        176  
Warrants
     225        103  
    
 
 
    
 
 
 
     524      934