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Property and Equipment (Schedule of Estimated Amortization Expense of Software) (Details) - USD ($)
Jan. 31, 2016
Apr. 30, 2015
Property, Plant and Equipment [Line Items]    
Intangible asset, net $ 201,640 $ 173,311
Software [Member]    
Property, Plant and Equipment [Line Items]    
2016 124,939  
2017 379,563  
2018 246,527  
2019 163,354  
2020 116,179  
Intangible asset, net $ 1,030,562 $ 1,114,349