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Summary of Significant Accounting Policies (Details 2)	9 Months Ended		12 Months Ended
Summary of Significant Accounting Policies (Details 2)	Jan. 31, 2015	Jan. 31, 2014	Apr. 30, 2014	Apr. 30, 2013
Total common stock equivalents	27,116,675	25,910,622	26,627,704	17,216,872
Warrant [Member]
Total common stock equivalents	3,126,667	3,276,667	3,276,667	3,276,667
Employee Stock Option [Member]
Total common stock equivalents			23,351,037	13,890,205
Restricted Stock [Member]
Total common stock equivalents			0	50,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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