Schedule of Stockholders Equity Deferred Share Unit Plan (Details) - 3 months ended Jul. 31, 2015	USD ($)
Common Stock Schedule Of Stockholders Equity Deferred Share Unit Plan 1	$ 1,999,047
Common Stock Schedule Of Stockholders Equity Deferred Share Unit Plan 2	1.10
Common Stock Schedule Of Stockholders Equity Deferred Share Unit Plan 3	$ 550,338
Common Stock Schedule Of Stockholders Equity Deferred Share Unit Plan 4	0.52
Common Stock Schedule Of Stockholders Equity Deferred Share Unit Plan 5	$ 2,549,385
Common Stock Schedule Of Stockholders Equity Deferred Share Unit Plan 6	0.98