Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | Period [Axis] |
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2015-05-01 - 2016-04-30 |
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Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | Stock option activity was as follows for the year ended April 30, 2016 and 2015: | | Number of Options | | Weighted-Average Exercise Price | | Weighted-Average Remaining Contract Term (Years) | | Aggregate Intrinsic Value | | | | | | | | | | | | | | | | Outstanding, May 1, 2014 | | | 6,039,000 | | $ | 0.75 | | | 7.89 | | $ | 28,000 | | Granted | | | 0 | | | - | | | - | | | - | | Forfeited/Expired | | | (1,485,000) | | | 0.33 | | | 6.83 | | | - | | Exercised | | | 0 | | | - | | | - | | | - | | | | | | | | | | | | | | | | Outstanding, April 30, 2015 | | | 4,554,000 | | $ | 0.64 | | | 5.94 | | $ | 24,000 | | Exercisable, April 30, 2015 | | | 3,418,000 | | $ | 0.83 | | | 5.25 | | $ | 16,000 | | | | | | | | | | | | | | | | Granted | | | - | | | - | | | - | | | - | | Forfeited/Expired | | | (1,290,000) | | | 0.29 | | | 6.89 | | | - | | Exercised | | | - | | | - | | | - | | | - | | | | | | | | | | | | | | | | Outstanding, April 30, 2016 | | | 3,264,000 | | | 0.78 | | | 4.56 | | $ | - | | Exercisable, April 30, 2016 | | | 2,911,000 | | | 0.87 | | | 4.24 | | $ | - | | |
Schedule of Nonvested Share Activity [Table Text Block] | A summary of the status of our unvested shares related to the Plan as of April 30, 2016 and 2015 is presented below: | | Number of Shares | | Weighted-Average Grant- Date Fair Value | | | | | | | | | | Non-vested balance, April 30, 2014 | | | 2,720,000 | | $ | 0.15 | | Granted | | | - | | | - | | Vested | | | (285,000) | | | 0.07 | | Forfeited/Expired | | | (1,299,000) | | | 0.33 | | | | | | | | | | Non-vested balance, April 30, 2015 | | | 1,136,000 | | $ | 0.07 | | | | | | | | | | Granted | | | - | | | - | | Vested | | | (285,000) | | | 0.01 | | Forfeited/Expired | | | (498,000) | | | 0.29 | | | | | | | | | | Non-vested balance, April 30, 2016 | | | 353,000 | | $ | 0.06 | | |
Schedule of Share-based Compensation, Activity [Table Text Block] | The warrant activity for the period starting May 1, 2014, through April 30, 2016, is described as follows: | | | | Weighted-Average Exercise | | | | Number of Shares | | Price | | | | | | | | | | Outstanding, May 1, 2014 | | | - | | $ | - | | Granted | | | 18,590,000 | | | 0.11 | | Forfeited/Expired | | | (10,000,000) | | | 0.10 | | Exercised | | | - | | | - | | | | | | | | | | Outstanding, April 30, 2015 | | | 8,590,000 | | | 0.11 | | | | | | | | | | Granted | | | 1,884,493 | | | 0.05 | | Forfeited/Expired | | | - | | | - | | Exercised | | | (2,724,493) | | | 0.05 | | | | | | | | | | Outstanding, April 30, 2016 | | | 7,750,000 | | | 0.11 | | |
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] | Following is a summary of the status of warrants outstanding at April 30, 2016 Exercise Price | | Number of Shares | | Expiration Date | | Weighted-Average Exercise Price | | | | | | | | | | | | | | $ | 0.11 | | | 1,250,000 | | | 11/21/2019 | | $ | 0.11 | | | 0.11 | | | 1,000,000 | | | 12/2/2019 | | | 0.11 | | $ | 0.11 | | | 5,500,000 | | | 12/3/2019 | | | 0.11 | | | Total | | | 7,750,000 | | | | | $ | 0.11 | | |