Property and Equipment (Schedule of Estimated Amortization Expense of Software) (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] | ||
| 2017 | 400,049 | |
| 2018 | 267,014 | |
| 2019 | 183,840 | |
| 2020 | 113,997 |