Property and Equipment (Schedule of Software, Net) (Details) - USD ($)  | 
Jan. 31, 2017  | 
Apr. 30, 2016  | 
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Intangible asset, net | $ 156,818 | $ 194,932 | 
| Software [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Intangible asset, gross | 2,091,660 | 2,567,383 | 
| Accumulated amortization | (1,027,210) | (1,560,932) | 
| Intangible asset, net | $ 1,064,450 | $ 1,006,451 | 
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Details 
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