| Stockholders' Deficiency (Stock Options Narrative) (Details) (USD $) | 3 Months Ended | |||||
|---|---|---|---|---|---|---|
| Jul. 31, 2014
 Employee [Member] | Jul. 31, 2013
 Employee [Member] | Jul. 31, 2014
 Non-employee [Member] | Jul. 31, 2013
 Non-employee [Member] | Jul. 31, 2014
 2012 Equity Incentive Plan [Member] | Mar. 13, 2012
 2012 Equity Incentive Plan [Member] | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||
| Equity Incentive Plan, shares authorized | 14,300,000 | 9,300,000 | ||||
| Equity Incentive Plan, shares remaining | 613,588 | |||||
| Unrecognized compensation cost | $ 622,536 | |||||
| Weighted average recognition period | 4 years | |||||
| Share based compensation expense | $ 96,455 | $ 148,608 | $ 748 | $ 748 | ||
| X | ||||||||||
| 
- Definition The number of shares remaining under the equity-based compensation plan for future issuance. No definition available. 
 | 
| X | ||||||||||
| 
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition Unrecognized cost of unvested options awarded to employees as compensation. No definition available. 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 | 
| X | ||||||||||
| 
- Definition The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
 |