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Stockholders' Equity (Tables)
12 Months Ended
Apr. 30, 2014
Stockholders' Equity Attributable to Parent [Abstract]  
Schedule of Stock by Class [Table Text Block]
 
2014
2013
Balance, May 1
5,265,750

5,515,750

Restricted stock activity
400,000

(250,000
)
Treasury stock activity
(50,000
)

Balance, April 30
5,615,750

5,265,750