Consolidated Balance Sheets (Parenthetical) (USD $)	Apr. 30, 2014	Apr. 30, 2013
Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	7,931,370	7,931,370
Preferred stock, shares issued	0	1,666,667
Preferred stock, shares outstanding	0	1,666,667
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	16,348,444	14,717,777
Common stock, shares outstanding	16,384,444	14,717,777