401(k) Retirement Saving Plan	12 Months Ended
Apr. 30, 2012
401(k) Retirement Saving Plan [Abstract]
401(k) RETIREMENT SAVINGS PLAN	NOTE I—401(k) RETIREMENT SAVINGS PLAN The Company sponsors 401(k) retirement savings plans, which are available to all non-union U.S. employees. The Company may elect to match participant contributions up to $300 annually. The Company contributed $87,160 and $75,392 to the plans during the fiscal years ended April 30, 2012 and 2011, respectively. The Company paid total expenses of $6,500 and $10,000 for the fiscal years ended April 30, 2012 and 2011, respectively, relating to costs associated with the administration of the plans.

The entire disclosure for pension and other postretirement benefits.

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