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Note H - Net Income Per Share (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
 
   
March 31,
 
   
2019
   
2018
 
   
(in thousands, except per share data)
 
                 
Net income
  $
8,301
    $
1,387
 
                 
Basic weighted average common shares outstanding
   
5,921
     
6,168
 
Dilutive effect of common stock equivalents
   
64
     
96
 
Diluted weighted average common shares outstanding
   
5,985
     
6,264
 
                 
Basic earnings per share
  $
1.40
    $
0.22
 
Diluted earnings per share
  $
1.39
    $
0.22