Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Net loss per share - Anti-dilutive securities (Details)

v3.3.1.900
Basis of Presentation and Summary of Significant Accounting Policies - Net loss per share - Anti-dilutive securities (Details) - shares
6 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Anti-dilutive securities 6,906,224 1,933,375
Common stock equivalent of convertible notes    
Anti-dilutive securities 300,000 240,000
Common stock equivalent of convertible notes - related parties    
Anti-dilutive securities 27,210 51,020
Series A preferred shares    
Anti-dilutive securities 2,838,207
Warrant    
Anti-dilutive securities 3,358,275 1,385,775
Common shares reserved for series A preferred share dividends    
Anti-dilutive securities 46,785
Stock options    
Anti-dilutive securities 335,747 265,580