| Stockholders' Equity (Tables)
 | 3 Months Ended | 
| Jul. 31, 2013 | 
| Stockholders' Equity [Abstract] |  | 
| Schedule of Warrants Activity |  
 A summary of the Company's warrant activity during the three months ended July 31, 2013 is presented below: 
 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|    |    |    |    |    |    |    |    |  Weighted |    |    |    |    |  
|    |    |    |    |    |  Weighted |    |    |  Average |    |    |    |    |  
|    |    |    |    |    |  Average |    |    |  Remaining |    |    |  Aggregate |    |  
|    |    |  Number of |    |    |  Exercise |    |    |  Contractual |    |    |  Intrinsic |    |  
|  Warrants |    |  Shares |    |    |  Price |    |    |  Term |    |    |  Value |    |  
| Balance Outstanding, April 30, 2013 |    |    | 9,090,292 |    |    | $ | 0.46 |    |    |    |    |    |    |    |  
|  Granted |    |    | 1,115,026 |    |    |    | 0.33 |    |    |    |    |    |    |    |  
|  Exercised |    |    | - |    |    |    | - |    |    |    |    |    |    |    |  
|  Forfeited |    |    | (40,000 | ) |    |    | 0.50 |    |    |    |    |    |    |    |  
|  Expired |    |    | - |    |    |    | - |    |    |    |    |    |    |    |  
| Balance Outstanding, July 31, 2013 |    |    | 10,165,318 |    |    | $ | 0.45 |    |    |    | 4.1 |    |    | $ | 51,862 |    |  
|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |  
| Exercisable, July 31, 2013 |    |    | 10,165,318 |    |    | $ | 0.45 |    |    |    | 4.1 |    |    | $ | 51,862 |    |  
 | 
| Schedule of Assumptions Used In Valuing Employee Stock Options |  
 The following table summarizes the assumptions the Company utilized to record compensation expense for stock options granted to employees during the three months ended July 31, 2013: 
 
|  |  |  |  
|    |    |  July 31, |  
|  Assumptions |    |  2013 |  
| Expected life (years) |    |  3.5 |  
| Expected volatility |    |  46.5% |  
| Weighted-average volatility |    |  46.5% |  
| Risk-free interest rate |    |  0.38% |  
| Dividend yield |    |  0.00% |  
| Expected forfeiture rate |    |  3.9% |  
 | 
| Schedule of Employee and Director Stock Option Activity |  
 A summary of the Company's stock option activity for employees and directors during the three months ended July 31, 2013 is presented below: 
 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|    |    |    |    |    |    |    |    |  Weighted |    |    |    |    |  
|    |    |    |    |    |  Weighted |    |    |  Average |    |    |    |    |  
|    |    |    |    |    |  Average |    |    |  Remaining |    |    |  Aggregate |    |  
|    |    |  Number of |    |    |  Exercise |    |    |  Contractual |    |    |  Intrinsic |    |  
| Options |    |  Shares |    |    |  Price |    |    |  Term |    |    |  Value |    |  
| Balance Outstanding, April 30, 2013 |    |    | 7,344,381 |    |    | $ | 0.35 |    |    |    |    |    |    |    |  
|  Granted |    |    | 1,536,211 |    |    | $ | 0.35 |    |    |    |    |    |    |    |  
|  Exercised |    |    | - |    |    |    |    |    |    |    |    |    |    |    |  
|  Forfeited |    |    | (40,000 | ) |    | $ | 0.35 |    |    |    |    |    |    |    |  
|  Expired |    |    | - |    |    |    |    |    |    |    |    |    |    |    |  
| Balance Outstanding, July 31, 2013 |    |    | 8,840,592 |    |    | $ | 0.35 |    |    |    | 4.2 |    |    | $ | - |    |  
|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |  
| Exercisable, July 31, 2013 |    |    | 2,051,998 |    |    | $ | 0.35 |    |    |    | 4.1 |    |    | $ | - |    |  
 | 
| Schedule of Assumptions Used In Valuing Non-Employee Stock Options |  
 The following table summarizes the assumptions the Company utilized to record compensation expense for stock options granted to non-employees during the three months ended July 31, 2013: 
 
|  |  |  |  
|    |    |  July 31, |  
|  Assumptions |    |  2013 |  
| Expected life (years) |    |  N/A |  
| Expected volatility |    |  N/A |  
| Weighted-average volatility |    |  N/A |  
| Risk-free interest rate |    |  N/A |  
| Dividend yield |    |  N/A |  | 
| Schedule of Non-Employee Stock Option Activity |  
 A summary of the Company's stock option activity for non-employees during the three months ended July 31, 2013 is presented below: 
 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|    |    |    |    |    |  Weighted |    |    |  Average |    |    |    |    |  
|    |    |    |    |    |  Average |    |    |  Remaining |    |    |  Aggregate |    |  
|    |    |  Number of |    |    |  Exercise |    |    |  Contractual |    |    |  Intrinsic |    |  
| Options |    |  Shares |    |    |  Price |    |    |  Term |    |    |  Value |    |  
| Balance Outstanding, April 30, 2013 |    |    | 270,000 |    |    | $ | 0.35 |    |    |    |    |    |    |    |  
|  Granted |    |    | - |    |    | $ | - |    |    |    |    |    |    |    |  
|  Exercised |    |    | - |    |    |    |    |    |    |    |    |    |    |    |  
|  Forfeited |    |    |    |    |    |    |    |    |    |    |    |    |    |    |  
|  Expired |    |    | - |    |    |    |    |    |    |    |    |    |    |    |  
| Balance Outstanding, July 31, 2013 |    |    | 270,000 |    |    | $ | 0.35 |    |    |    | 4.3 |    |    | $ | - |    |  
|    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |  
| Exercisable, July 31, 2013 |    |    | 47,250 |    |    |    | N/A |    |    |    | N/A |    |    |    | N/A |    |  
 |