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Stockholders' Equity
3 Months Ended
Jul. 31, 2012
Stockholders' Equity Attributable to Parent [Abstract]  
Stockholders' Equity Note Disclosure [Text Block]
STOCKHOLDERS' EQUITY

The changes in shares of common stock outstanding as of July 31 of each year are summarized as follows:

 
2012
2011
Balance, May 1
5,515,750

5,828,650

Restricted stock activity


Treasury stock activity


Balance, July 31
5,515,750

5,828,650