Schedule of Stockholders Equity Non Vested Deferred Share Units (Details) - 3 months ended Jul. 31, 2015	USD ($)
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 1	$ 251,690
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 2	1.46
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 3	$ 550,338
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 4	0.52
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 5	$ (416,809)
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 6	0.82
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 7	$ 385,219
Common Stock Schedule Of Stockholders Equity Non Vested Deferred Share Units 8	0.82