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Note H - Income Per Share (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30,
   
June 30,
 
   
2019
   
2018
   
2019
   
2018
 
   
(in thousands, except per share data)
 
                                 
Net income
  $
8,654
    $
7,289
    $
16,955
    $
8,676
 
                                 
Basic weighted average common shares outstanding
   
5,901
     
6,159
     
5,911
     
6,163
 
Dilutive effect of common stock equivalents
   
48
     
70
     
51
     
94
 
Diluted weighted average common shares outstanding
   
5,949
     
6,229
     
5,962
     
6,257
 
                                 
Basic earnings per share
  $
1.47
    $
1.18
    $
2.87
    $
1.41
 
Diluted earnings per share
  $
1.45
    $
1.17
    $
2.84
    $
1.39