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Note H - Weighted Average Shares Outstanding (Tables)
9 Months Ended
Jan. 31, 2013
Schedule of Weighted Average Number of Shares [Table Text Block]
   
Three Months Ended
January 31,
   
Nine Months Ended
January 31,
 
   
2013
   
2012
   
2013
   
2012
 
                         
Weighted average shares outstanding-basic
    9,017,613       9,610,125       9,142,296       9,886,100  
Dilutive options and restricted stock
    433,860       388,165       451,558       333,696  
                                 
Weighted average shares outstanding-diluted
    9,451,473       9,998,290       9,593,854       10,219,796  
                                 
Antidilutive securities not included:
                               
Options
    45,000       35,000       41,667       28,333