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EARNINGS PER SHARE DATA (Tables)
6 Months Ended
Jun. 30, 2012
EARNINGS PER SHARE DATA [Abstract]  
Computation of basic and diluted earnings per share
The following table sets forth the computation of basic and diluted earnings per share for the periods indicated.

   
Three Months Ended
June 30
  
Six Months Ended
June 30
 
   
2012
  
2011
  
2012
  
2011
 
Basic:
            
Weighted average shares outstanding
  14,392,145   14,327,266   14,360,246   14,303,209 
Net income
 $12,177,000  $7,610,000  $23,823,000  $13,953,000 
Convertible preferred stock dividend
  (22,000)  (22,000)  (45,000)  (45,000)
Net income attributable to common shareholders
 $  12,155,000  $ 7,588,000  $  23,778,000  $13,908,000 
Per share amount
 $0.84  $0.53  $1.66  $0.97 
                  
Diluted:
                
Weighted average shares outstanding
  14,392,145   14,327,266   14,360,246   14,303,209 
Assumed conversion of convertible preferred stock
  840,000   840,000   840,000   840,000 
Total
  15,232,145   15,167,266   15,200,246   15,143,209 
Net income attributable to common shareholders
 $12,155,000  $7,588,000  $23,778,000  $13,908,000 
Convertible preferred stock dividend
  22,000   22,000   45,000   45,000 
Net income for diluted earnings per share
 $12,177,000  $7,610,000  $23,823,000  $13,953,000 
Per share amount
 $0.80  $0.50  $1.57  $0.92