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Earnings Per Common Share
9 Months Ended
Sep. 30, 2011
EARNINGS PER COMMON SHARE 
EARNINGS PER COMMON SHARE
11. EARNINGS PER COMMON SHARE

The following table sets forth the computation of basic and diluted earnings per common share:

   
Three Months Ended
   
Nine Months Ended
 
   
September 30,
   
September 30,
 
   
2011
   
2010
   
2011
   
2010
 
   
In thousands, except per share data
 
Numerator:
                       
Numerator for basic and diluted earnings per common share -
                       
net income available to common stockholders:
  $ 9,740     $ 6,513     $ 16,791     $ 14,253  
Denominator:
                               
Weighted average shares
    10,185       10,246       10,257       10,203  
Denominator for basic earnings per common share
    10,185       10,246       10,257       10,203  
                                 
Effect of dilutive securities:
                               
Employee stock options
    26       56       31       76  
Other stock compensation plans
    82       52       78       45  
Dilutive potential common shares
    108       108       109       121  
Denominator for diluted earnings per common share -
                               
adjusted weighted average shares and assumed conversions
    10,293       10,354       10,366       10,324  
Basic earnings per common share
  $ 0.96     $ 0.64     $ 1.64     $ 1.40  
Diluted earnings per common share
  $ 0.95     $ 0.63     $ 1.62     $ 1.38