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Note H - Weighted Average Shares Outstanding (Tables)
3 Months Ended
Jul. 31, 2014
Weighted Average Shares Outstanding [Text Block] [Abstract]  
Schedule of Weighted Average Number of Shares [Table Text Block]
   
Three Months Ended
July 31,
 
   
2014
   
2013
 
             
Weighted average shares outstanding-basic
    8,716,344       9,020,228  
Dilutive options and restricted stock
    426,718       472,624  
                 
Weighted average shares outstanding-diluted
    9,143,062       9,492,852  
                 
Antidilutive securities not included:
               
Options
    70,000       60,000