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STOCK COMPENSATION PLANS (Tables)
 9 Months Ended
Sep. 30, 2018
STOCK COMPENSATION PLANS [Abstract]  
Changes in Shares of Class A Common Stock Underlying Options and Restricted Stock Awards
The following summary reflects changes in the shares of Class A Stock underlying options and restricted stock awards for the nine months ended September 30, 2018:

  
Options
  
Restricted Awards
 
  
Option Shares
  
Weighted Average Exercise Price
  
Weighted Average Remaining Life (Yrs.)
  
Aggregate Intrinsic Value (in thousands)
  
Outstanding Restricted Stock Awards
  
Weighted Average Grant Date Fair
Value
 
Plan options/restricted stock awards
                  
Outstanding at January 1, 2018
  
176,802
  
$
19.91
     
$
3,298
   
5,000
   
38.10
 
Granted
  
–
   
–
      
–
   
5,000
  
$
38.51
 
Exercised/vested and released
  
(8,052
)
  
15.77
      
176
   
(5,000
)
  
38.10
 
Expired/cancelled
  
–
   
–
      
–
   
–
   
–
 
Outstanding at September 30, 2018
  
168,750
  
$
20.11
   
3.58
  
$
2,814
   
5,000
  
$
38.51
 
                         
Exercisable/vested at September 30, 2018
  
168,750
  
$
20.11
   
3.58
  
$
2,814
   
–
   
–