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Property and Equipment (Details Textual) (USD $)
3 Months Ended 6 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2014
Oct. 31, 2013
Property, Plant and Equipment [Line Items]        
Depreciation $ 54us-gaap_Depreciation $ 53us-gaap_Depreciation $ 110us-gaap_Depreciation $ 102us-gaap_Depreciation