Disclosure of Share-based Compensation Arrangements by Share-based Payment Award (Details)	3 Months Ended
	Jul. 31, 2015 USD ($)
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 1	$ 0.45
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 2	50,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 3	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 4	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 5	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 6	0.47
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 7	122,750
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 8	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 9	122,750
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 10	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 11	0.50
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 12	579,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 13	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 14	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 15	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 16	0.52
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 17	325,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 18	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 19	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 20	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 21	0.78
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 22	34,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 23	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 24	4,964
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 25	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 26	1.05
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 27	86,375
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 28	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 29	25,417
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 30	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 31	1.15
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 32	550,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 33	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 34	175,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 35	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 36	1.23
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 37	20,833
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 38	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 39	20,833
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 40	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 41	1.31
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 42	600,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 43	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 44	237,500
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 45	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 46	1.41
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 47	100,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 48	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 49	43,750
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 50	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 51	1.70
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 52	650,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 53	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 54	582,292
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 55	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 56	1.90
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 57	845,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 58	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 59	612,500
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 60	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 61	2.15
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 62	240,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 63	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 64	240,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 65	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 66	2.90
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 67	300,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 68	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 69	225,000
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 70	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 71	4,502,958
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 72	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 73	2,290,006
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 74	0
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 75	4,117,812
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 76	6,183
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 77	2,105,439
Common Stock Disclosure Of Share-based Compensation Arrangements By Share-based Payment Award 78	$ 3,683