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Taxes
3 Months Ended
Jul. 31, 2011
Income Tax Disclosure [Abstract]  
Income Tax Disclosure [Text Block]
(9)
Taxes
 
Unrecognized tax benefits were $333,000 at July 31, 2011 and April 30, 2011.  As a result of either the expiration of statutes of limitations or the recognition or measurement considerations under the FASB Accounting Standards Codification (“ASC”) 740, the Company believes that it is reasonably possible that the amount of unrecognized tax benefits will decrease within the next twelve months.