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Risk Factors
 6 Months Ended
Oct. 31, 2011
Risk Factors [Abstract]  
Risk Factors

10. Risk Factors

            The Company's financial condition and results of operations are affected by a variety of factors and business influences, certain of which are described in the Cautionary Statements included in Item 2 of this Form 10-Q and in the "Risk Factors" described in Item 1A of the Annual Report on Form 10-K for the fiscal year ended April 30, 2011.  These interim condensed consolidated financial statements should be read in conjunction with those disclosures.