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NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE (Tables)
6 Months Ended
Jun. 30, 2018
NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE [Abstract]  
Shares Used in Computing Basic and Diluted Net Income Per Share
The following table summarizes the shares used in computing basic and diluted net income per share:

  
For the Three Months Ended June 30,
  
For the Six Months Ended June 30,
 
       
  
2018
  
2017
  
2018
  
2017
 
  
(in thousands)
  
(in thousands)
 
             
Weighted average common shares outstanding during the period for Basic computation
  
9,237
   
9,163
   
9,230
   
9,149
 
Dilutive effect of employee stock options and awards
  
56
   
72
   
57
   
71
 
                 
Weighted average common shares outstanding during the period for Diluted computation
  
9,293
   
9,235
   
9,287
   
9,220