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Earnings per Common Share
6 Months Ended
Jun. 30, 2011
Earnings per Common Share [Abstract]  
Earnings per Common Share
(6) Earnings per Common Share
Basic earnings per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period presented. Diluted earnings per common share is calculated by dividing net income by the weighted average number of common shares and potential common shares outstanding during the period.
The following table sets forth the computation of basic and diluted earnings per share for the three and six month periods ended June 30, 2011 and 2010.
                                 
    Three Months Ended June 30,     Six Months Ended June 30,  
    2011     2010     2011     2010  
 
Net income
  $ 9,854     $ 6,659     $ 19,360     $ 17,789  
Less preferred stock dividends
    853       853       1,697       1,697  
 
Net income available to common stockholders, basic and diluted
  $ 9,001     $ 5,806     $ 17,663     $ 16,092  
 
Weighted average common shares outstanding
    42,781,894       42,620,563       42,735,897       37,133,376  
Weighted average common shares issuable upon exercise of stock options and non-vested stock awards
    114,717       283,433       138,031       269,087  
 
Weighted average common and common equivalent shares outstanding
    42,896,611       42,903,996       42,873,928       37,402,463  
 
Basic earnings per common share
  $ 0.21     $ 0.14     $ 0.41     $ 0.43  
 
Diluted earnings per common share
  $ 0.21     $ 0.14     $ 0.41     $ 0.43  
 
The Company had 2,960,016 and 2,623,276 stock options outstanding for the three and six months ended June 30, 2011, respectively, that were not included in the computation of diluted earnings per common share because their effect would be anti-dilutive. The Company had outstanding options to purchase 2,325,441 and 2,380,371 shares of common stock for the three and six months ended June 30, 2010, respectively, that were not included in the computation of diluted earnings per common share because their effect would be anti-dilutive.