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EARNINGS PER COMMON SHARE (Tables)
 12 Months Ended
Dec. 31, 2012
EARNINGS PER COMMON SHARE [Abstract]  
Calculation of basic and diluted earnings per share
The following table shows a reconciliation of the numerators and denominators used in calculating basic and diluted earnings per share.
 
   
Year ended December 31,
 
   
2012
  
2011
  
2010
 
Numerators
         
Net income
 $16,487  $16,389  $12,931 
Denominators
            
Weighted average common shares - basic
  11,701,607   11,559,895   11,420,524 
              
Dilutive effect of restricted stock
  137,575   181,618   209,743 
Dilutive effect of employee stock options
  -   -   6,118 
              
Weighted average common shares - diluted
 $11,839,182  $11,741,513  $11,636,385 
              
Basic earnings per share
 $1.41  $1.42  $1.13 
              
Diluted earnings per share
 $1.39  $1.40  $1.11