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NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE (Tables)
 12 Months Ended
Dec. 31, 2019
NET INCOME PER COMMON SHARE AND EQUITY PER COMMON SHARE [Abstract]  
Shares Used in Computing Basic and Diluted Net Income Per Share
Basic net income per share is based on the weighted average number of common shares outstanding. Diluted net income per share is based on the weighted average number of common shares outstanding, the potentially dilutive effect of employee stock options and restricted stock awards. The following table summarizes the shares used in computing basic and diluted net income per share:

 
For the Year
 
 
Ended December 31,
 
 
2019
  
2018
  
2017
 
 
(in thousands)
 
 
      
Weighted average common shares outstanding during the period for Basic computation
 
$
9,277
  
$
9,239
  
$
9,175
 
Dilutive effect of employee stock options
  
49
   
54
   
67
 
Weighted average common shares outstanding during the period for Diluted computation
 
$
9,326
  
$
9,293
  
$
9,242