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Note 2 - Earnings Per Common Share
 9 Months Ended
Sep. 30, 2012
Earnings Per Share [Text Block]
(2)  Earnings Per Common Share

Basic and diluted earnings per common share were computed as follows:

   
Three Months
Ended September 30,
   
Nine Months
Ended September 30,
 
(In thousands, except per share amounts)
 
2012
    2011    
2012
    2011  
Numerator:
                       
Net income
  $ 6,518     $ 6,333     $ 19,548     $ 16,622  
Denominator:
                               
Basic earnings per common share - weighted-average shares
    22,071       21,985       22,057       21,978  
Effect of dilutive stock options
    77       89       93       100  
Diluted earnings per common share - weighted-average shares and assumed conversions
    22,148       22,074       22,150       22,078  
Basic earnings per common share
  $ 0.30     $ 0.29     $ 0.89     $ 0.76  
Diluted earnings per common share
  $ 0.29     $ 0.29     $ 0.88     $ 0.75  

Options totaling 455,850 and 441,550 shares for the three-month and nine-month periods ended September 30, 2012, respectively, and 387,000 and 374,500 shares for the three-month and nine-month periods ended September 30, 2011, respectively, were outstanding but were not included in the calculation of diluted earnings per share because including the options in the denominator would be antidilutive, or decrease the number of weighted-average shares, due to their exercise prices exceeding the average market price of the common shares or due to inclusion of average unrecognized compensation expense in the calculation.

Unvested performance unit awards totaling 29,549 and 47,935 shares for the three-month and nine-month periods ended September 30, 2012, respectively, and 36,730 shares for each of the three-month and nine-month periods ended September 30, 2011, were considered outstanding but were not included in the calculation of diluted earnings per share because inclusion of average unrecognized compensation expense in the calculation would cause the performance units to be antidilutive.