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Earnings Per Share
6 Months Ended
Jun. 30, 2011
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
NOTE 5 — EARNINGS PER SHARE
     Basic earnings per share is calculated by dividing net income available to common shareholders by the weighted average number of participating common shares outstanding. Unvested restricted shares are considered outstanding in the computation of basic earnings per share as holders of unvested restricted stock awards participate fully in the awards of stock ownership of the Company, including voting and dividend rights. Diluted earnings per share has been calculated in a manner similar to that of basic earnings per share except that the weighted average number of common shares outstanding is increased to include the number of additional common shares that would have been outstanding if all potentially dilutive common shares (such as those resulting from the exercise of stock options) were issued during the period, computed using the treasury stock method.
     Earnings per share consisted of the following components for the periods indicated:
                                 
    Three Months Ended   Six Months Ended
    June 30,   June 30,
    2011   2010   2011   2010
    (Dollars in Thousands)   (Dollars in Thousands)
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS
  $ 11,120     $ 8,030     $ 22,308     $ 17,257  
     
                                 
    Weighted Average Shares   Weighted Average Shares
BASIC SHARES
    21,441,864       20,964,706 (1)     21,370,457       20,951,264 (1)
Effect of Dilutive Securities
    39,159       90,939       43,775       83,289  
     
DILUTIVE SHARES
    21,481,023       21,055,645       21,414,232       21,034,553  
     
 
                               
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS PER SHARE
                               
BASIC EPS
  $ 0.52     $ 0.38     $ 1.04     $ 0.82  
Effect of Dilutive Securities
                       
     
DILUTIVE EPS
  $ 0.52     $ 0.38     $ 1.04     $ 0.82  
     
 
(1)   Unvested restricted stock awards were not considered outstanding in the computation of basic earnings per share due to the immaterial balance for the three and six months ended June 30, 2010.
     The following table illustrates the options to purchase common stock that were excluded from the calculation of diluted earnings per share because they were anti-dilutive:
                                 
    Three Months Ended   Six Months Ended
    June 30,   June 30,
    2011   2010   2011   2010
     
Stock Options
    808,918       745,581       793,675       744,221