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Note H - Weighted Average Shares Outstanding (Tables)
9 Months Ended
Jan. 31, 2020
Notes Tables  
Schedule of Weighted Average Number of Shares [Table Text Block]
    Three Months Ended
January 31,
  Nine Months Ended
January 31,
    2020   2019   2020   2019
                 
Weighted average shares outstanding-basic    
6,597,643
     
6,751,026
     
6,634,496
     
6,846,707
 
Dilutive options and restricted stock    
342,481
     
252,363
     
335,352
     
240,723
 
                                 
Weighted average shares outstanding-diluted    
6,940,124
     
7,003,389
     
6,969,848
     
7,087,430
 
                                 
Antidilutive securities not included:                                
Options    
200,000
     
120,000
     
83,333
     
80,000
 
Restricted stock    
4,224
     
-
     
3,408
     
-