Schedule Stock Options, Activity (Details) (USD $)	12 Months Ended
	Jul. 31, 2014
Capital Stock Schedule Stock Options, Activity 1	8,579,750
Capital Stock Schedule Stock Options, Activity 2	1.79
Capital Stock Schedule Stock Options, Activity 3	7.40
Capital Stock Schedule Stock Options, Activity 4	$ 1,372,521
Capital Stock Schedule Stock Options, Activity 5	3.00
Capital Stock Schedule Stock Options, Activity 6	9.29
Capital Stock Schedule Stock Options, Activity 7	(272,625)
Capital Stock Schedule Stock Options, Activity 8	1.93
Capital Stock Schedule Stock Options, Activity 9	6.21
Capital Stock Schedule Stock Options, Activity 10	(120,375)
Capital Stock Schedule Stock Options, Activity 11	3.18
Capital Stock Schedule Stock Options, Activity 12	9.08
Capital Stock Schedule Stock Options, Activity 13	9,559,271
Capital Stock Schedule Stock Options, Activity 14	1.95
Capital Stock Schedule Stock Options, Activity 15	6.52
Capital Stock Schedule Stock Options, Activity 16	155,000
Capital Stock Schedule Stock Options, Activity 17	2.27
Capital Stock Schedule Stock Options, Activity 18	9.51
Capital Stock Schedule Stock Options, Activity 19	(519,909)
Capital Stock Schedule Stock Options, Activity 20	0.37
Capital Stock Schedule Stock Options, Activity 21	3.53
Capital Stock Schedule Stock Options, Activity 22	(42,673)
Capital Stock Schedule Stock Options, Activity 23	5.37
Capital Stock Schedule Stock Options, Activity 24	0
Capital Stock Schedule Stock Options, Activity 25	(185,500)
Capital Stock Schedule Stock Options, Activity 26	2.79
Capital Stock Schedule Stock Options, Activity 27	7.22
Capital Stock Schedule Stock Options, Activity 28	8,966,189
Capital Stock Schedule Stock Options, Activity 29	2.02
Capital Stock Schedule Stock Options, Activity 30	5.72
Capital Stock Schedule Stock Options, Activity 31	(713,900)
Capital Stock Schedule Stock Options, Activity 32	0.41
Capital Stock Schedule Stock Options, Activity 33	2.75
Capital Stock Schedule Stock Options, Activity 34	(41,575)
Capital Stock Schedule Stock Options, Activity 35	4.85
Capital Stock Schedule Stock Options, Activity 36	0
Capital Stock Schedule Stock Options, Activity 37	(223,500)
Capital Stock Schedule Stock Options, Activity 38	3.46
Capital Stock Schedule Stock Options, Activity 39	5.48
Capital Stock Schedule Stock Options, Activity 40	$ 7,987,214
Capital Stock Schedule Stock Options, Activity 41	2.10
Capital Stock Schedule Stock Options, Activity 42	4.97