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Stockholders' Equity
12 Months Ended
Apr. 30, 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 April 30 of each year are summarized as follows:

 
2012
2011
Balance, May 1
5,828,650

5,873,100

Restricted stock activity
(312,900
)

Treasury stock activity

(44,450
)
Balance, April 30
5,515,750

5,828,650