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Property and Equipment (Schedule of Estimated Amortization Expense of Software) (Details) - USD ($)
Jul. 31, 2015
Apr. 30, 2015
Property, Plant and Equipment [Line Items]    
Intangible asset, net $ 195,727 $ 173,311
Software [Member]    
Property, Plant and Equipment [Line Items]    
2016 349,584  
2017 343,661  
2018 210,626  
2019 127,453  
2020 60,587  
Intangible asset, net $ 1,091,911 $ 1,114,349