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Note H - Weighted Average Shares Outstanding (Tables)
3 Months Ended
Jul. 31, 2018
Notes Tables  
Schedule of Weighted Average Number of Shares [Table Text Block]
    Three Months Ended
July 31,
    2018   2017
         
Weighted average shares outstanding-basic    
6,924,035
     
7,548,846
 
Dilutive options and restricted stock    
202,650
     
219,464
 
                 
Weighted average shares outstanding-diluted    
7,126,685
     
7,768,310
 
                 
Antidilutive securities not included:                
Options    
120,000
     
337,750
 
Restricted stock    
-
     
34,000