Significant Accounting Policies (Narrative) (Details) - 3 months ended Jul. 31, 2015	USD ($)	CAD
Significant Accounting Policies 1	$ 6,339,717
Significant Accounting Policies 2 | CAD		CAD 6,704,947
Significant Accounting Policies 3	2,083,960
Significant Accounting Policies 4 | CAD		2,083,752
Significant Accounting Policies 5	5,165,997
Significant Accounting Policies 6 | CAD		6,704,947
Significant Accounting Policies 7	5,578,159
Significant Accounting Policies 8	1,605,219
Significant Accounting Policies 9 | CAD		CAD 2,083,414
Significant Accounting Policies 10	$ 1,733,290
Significant Accounting Policies 11	4,454,172	4,454,172
Significant Accounting Policies 12	6,092,936	6,092,936