Income Taxes (Deferred Tax Asset Valuation Allowance Rollforward) (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Apr. 30, 2015 |
Apr. 30, 2014 |
|
| Income Taxes [Abstract] | ||
| Valuation allowance, beginning of year | $ (6,664,215) | $ (4,684,841) |
| (Increase) during period | (1,575,985) | (1,979,374) |
| Valuation allowance, ending balance | $ (8,240,200) | $ (6,664,215) |
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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