Property and Equipment (Schedule of Software, Net) (Details) - USD ($) |
Apr. 30, 2016 |
Apr. 30, 2015 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Intangible asset, net | $ 194,932 | $ 173,311 |
| Software [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Intangible asset, gross | 2,567,383 | 2,244,802 |
| Accumulated amortization | (1,560,932) | (1,130,453) |
| Intangible asset, net | $ 1,006,451 | $ 1,114,349 |