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Net Income Per Common Share
6 Months Ended
Jun. 30, 2011
Earnings Per Share [Abstract]  
Net Income Per Common Share
3. Net Income Per Common Share
Companies are required to present basic and diluted earnings per share. Basic net income per share is computed by dividing net income by the weighted daily average number of shares of common stock outstanding during the period. Diluted net income per share is based upon the weighted daily average number of shares of common stock outstanding for the period plus dilutive potential common shares, including stock options and restricted stock units using the treasury-stock method.
A reconciliation of the weighted average basic common shares outstanding to the weighted average diluted common shares outstanding is as follows (unaudited):
                                 
    Three Months Ended June 30     Six Months Ended June 30  
    2011     2010     2011     2010  
Weighted average common basic shares outstanding
    15,834,622       15,531,726       15,812,910       15,461,904  
Effect of dilutive stock options and restricted stock units
    329,492       345,532       342,362       379,809  
 
                       
Weighted average common diluted shares outstanding
    16,164,114       15,877,258       16,155,272       15,841,713  
 
                       
Net income per share:
                               
Basic
  $ 0.29     $ 0.29     $ 0.53     $ 0.48  
Diluted
  $ 0.28     $ 0.28     $ 0.52     $ 0.46  
There were 9,534 and 19,068 anti-dilutive options excluded in the computation of diluted earnings per share for the three and six months ended June 30, 2011 and 2010, respectively, because the options’ exercise prices were greater than the average market price of the common stock.
There are no additional securities that could dilute basic earnings per share in the future that were not included in the computation of diluted earnings per share, other than those disclosed.