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Note H - Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30,
   
June 30,
 
   
2018
   
2017
   
2018
   
2017
 
   
(in thousands, except per share data)
 
                                 
Net income
  $
7,289
    $
1,609
    $
8,676
    $
3,892
 
                                 
Basic weighted average common shares outstanding
   
6,159
     
6,381
     
6,163
     
6,390
 
Dilutive effect of common stock equivalents
   
70
     
49
     
94
     
22
 
Diluted weighted average common shares outstanding
   
6,229
     
6,430
     
6,257
     
6,412
 
                                 
Basic earnings per share
  $
1.18
    $
0.25
    $
1.41
    $
0.61
 
Diluted earnings per share
  $
1.17
    $
0.25
    $
1.39
    $
0.61