Preferred Stock	6 Months Ended
Oct. 31, 2014
Preferred Stock [Abstract]
Preferred Stock	9.Preferred Stock In June 2011, we issued, through a private placement, 1,666,667 shares of preferred stock to a group of related party institutional investors at a price of $2.40 per share for a total of $4.0 million. These shares of preferred stock were automatically converted on a 1-for-1 basis into shares of common stock on June 30, 2013. The preferred stock included an annual dividend of $0.24 per share payable in cash or stock at our option. In August 2013, we paid a final dividend of $66,000 on this preferred stock ($0.04 per preferred share).

Preferred Stock

6 Months Ended

Oct. 31, 2014

9.Preferred Stock

In June 2011, we issued, through a private placement, 1,666,667 shares of preferred stock to a group of related party institutional investors at a price of $2.40 per share for a total of $4.0 million. These shares of preferred stock were automatically converted on a 1-for-1 basis into shares of common stock on June 30, 2013. The preferred stock included an annual dividend of $0.24 per share payable in cash or stock at our option. In August 2013, we paid a final dividend of $66,000 on this preferred stock ($0.04 per preferred share).