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Earnings per share
 3 Months Ended
Mar. 31, 2022
Earnings per share [Abstract]  
Earnings per share
6. Earnings per share

The following table sets forth the reconciliation of basic weighted average shares outstanding and diluted weighted average shares outstanding:

 
Three Months Ended
  
   
March 31,
  
   
2022
    
2021
  
   
(In thousands, except per share data)
  
Net loss
  
$
(4,013
)
  
$
(2,206
)
                 
Shares:
                
Basic:  Weighted average common shares outstanding
    
9,886
      
8,948
  
Add:  Dilutive effect of outstanding options and restricted stock units as determined by the treasury stock method
    
–
      
–
  
Diluted:  Weighted average common and common equivalent shares outstanding
    
9,886
      
8,948
  
                 
Net loss per common share:
                
Basic
  
$
(0.41
)
  
$
(0.25
)
Diluted
  
$
(0.41
)
  
$
(0.25
)

The computation of diluted earnings per share excludes the effect of the potential exercise of stock awards, including stock options and restricted stock units, when the average market price of the common stock is lower than the exercise price of the related stock award during the period, as the inclusion of these stock awards in the computation of diluted earnings would be anti-dilutive. For the three months ended March 31, 2022 and 2021, there were 943 thousand and 705 thousand, respectively, of potentially dilutive shares consisting of stock awards that were excluded from the calculation of earnings per diluted share.  Furthermore, in  periods when a net loss is reported, such as the three months ended March 31, 2022 and 2021, basic and diluted net loss per common share are calculated using the same method.