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Property and Equipment (Schedule of Estimated Amortization Expense of Software) (Details) - USD ($)
Jul. 31, 2016
Apr. 30, 2016
Property, Plant and Equipment [Line Items]    
Intangible asset, net $ 183,480 $ 194,932
Software [Member]    
Property, Plant and Equipment [Line Items]    
2017 296,166  
2018 291,477  
2019 208,304  
2020 138,462  
2021 70,178  
Intangible asset, net $ 1,004,587 $ 1,006,451