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Stockholders' Equity (Deficiency) (Schedule of Stock Options Activity) (Details) (USD $)
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3 Months Ended | 12 Months Ended |
|---|---|---|
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Jul. 31, 2014
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Apr. 30, 2014
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Stock Incentive Plan and Stock Option Grants to Employees and Directors [Member]
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| Number of Shares | ||
| Balance Outstanding, April 30, 2013 | 10,476,412 | 7,344,381 |
| Granted | 3,778,711 | |
| Exercised | ||
| Forfeited | (10,000) | (646,680) |
| Expired | ||
| Balance Outstanding, April 30, 2014 | 10,466,412 | 10,476,412 |
| Exercisable, April 30, 2014 | 5,082,712 | 2,050,332 |
| Weighted Average Exercise Price | ||
| Balance Outstanding, April 30, 2013 | $ 0.35 | $ 0.35 |
| Weighted average exercise price of options granted | $ 0.25 | |
| Exercised | ||
| Forfeited | $ 0.35 | |
| Expired | ||
| Balance Outstanding, April 30, 2014 | $ 0.23 | $ 0.35 |
| Exercisable, April 30, 2014 | $ 0.27 | $ 0.35 |
| Weighted Average Remaining Contractual Term | ||
| Balance Outstanding, April 30, 2014 | 3 years 6 months | 4 years |
| Exercisable, April 30, 2014 | 3 years 4 months 24 days | 3 years 9 months 18 days |
| Aggregate Intrinsic Value | ||
| Balance Outstanding, April 30, 2014 | ||