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Note 15 - Net Income Per Share and Common Stock Dividends
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
(15)
Net Income per Share and Common Stock Dividends
 
The following table reflects the numerators (net income) and denominators (average shares outstanding) for the basic and diluted net income per share computations:
 
(In thousands, except per share data)
 
2016
 
 
2015
 
 
2014
 
                         
Net income, basic and diluted
   $
41,027
     $
37,187
     $
34,822
  
                         
Average shares outstanding, basic
   
22,356
      
22,088
      
21,839
  
Effect of dilutive securities
    
436
      
371
      
305
  
                         
Average shares outstanding including dilutive securities
    
22,792
      
22,459
      
22,144
  
                         
Net income per share, basic
   $
1.84
     $
1.68
     $
1.59
  
                         
Net income per share, diluted
   $
1.80
     $
1.65
     $
1.57