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Note 2 - Earnings Per Common Share
9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
(2)  Earnings per Common Share
 
Basic and diluted earnings per common share were computed as follows: 
 
   
Three Months
    Nine Months   
   
Ended September 30,
    Ended September 30,   
(In thousands, except per share amounts)
 
2016
   
2015
   
2016
   
2015
 
Numerator:
                               
Net income
  $ 8,437     $ 8,410     $ 25,161     $ 26,955  
Denominator:
                               
Basic earnings per common share - weighted-average shares
    32,531       33,622       32,476       33,555  
Effect of dilutive stock options
    184       224       177       261  
Diluted earnings per common share - weighted-average shares and assumed conversions
    32,715       33,846       32,653       33,816  
                                 
Basic earnings per common share
  $ 0.26     $ 0.25     $ 0.77     $ 0.80  
Diluted earnings per common share
  $ 0.26     $ 0.25     $ 0.77     $ 0.80  
 
              Options totaling 248,000 and 344,000 equivalent shares for the three-month and nine-month periods ended September 30, 2016, and 324,600 and 311,200 equivalent shares for the three-month and nine-month periods ended September 30, 2015, 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 because inclusion of average unrecognized compensation expense in the calculation would cause the options to be antidilutive.
 
Unvested performance unit awards totaling 42,543 equivalent shares for each of the three-month and nine-month periods ended September 30, 2016, and 67,595 equivalent shares for each of the three-month and nine-month periods ended September 30, 2015, 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.