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Note E - Stock Based Compensation (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
   
Restricted Stock
 
   
Number of
Shares
   
Weighted-
Average Grant
Date Fair Value
 
Non-vested at January 1, 2019
   
100,917
    $
23.09
 
Granted
   
-
     
-
 
Canceled/forfeited/expired
   
-
     
-
 
Vested
   
(1,250
)    
30.81
 
Non-vested at March 31, 2019
   
99,667
    $
22.99