Schedule of Stockholders' Equity Note, Warrants or Rights, Activity (Details) (USD $)	6 Months Ended
	Oct. 31, 2013
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 1	$ 2,248,399
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 2	2.57
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 3	0
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 4	0
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 5	0
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 6	0
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 7	0
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 8	0
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 9	(1,515,899)
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 10	2.25
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 11	$ 732,500
Common Stock Schedule Of Stockholders' Equity Note, Warrants Or Rights, Activity 12	3.25