Schedule Stock Options, Activity (Details) (USD $)	9 Months Ended
	Apr. 30, 2014
Capital Stock Schedule Stock Options, Activity 1	$ 8,966,189
Capital Stock Schedule Stock Options, Activity 2	2.02
Capital Stock Schedule Stock Options, Activity 3	5.72
Capital Stock Schedule Stock Options, Activity 4	(67,803)
Capital Stock Schedule Stock Options, Activity 5	0.33
Capital Stock Schedule Stock Options, Activity 6	1.19
Capital Stock Schedule Stock Options, Activity 7	(3,900)
Capital Stock Schedule Stock Options, Activity 8	10.26
Capital Stock Schedule Stock Options, Activity 9	0
Capital Stock Schedule Stock Options, Activity 10	(75,000)
Capital Stock Schedule Stock Options, Activity 11	3.12
Capital Stock Schedule Stock Options, Activity 12	2.17
Capital Stock Schedule Stock Options, Activity 13	8,819,486
Capital Stock Schedule Stock Options, Activity 14	2.02
Capital Stock Schedule Stock Options, Activity 15	5.53
Capital Stock Schedule Stock Options, Activity 16	(30,850)
Capital Stock Schedule Stock Options, Activity 17	4.11
Capital Stock Schedule Stock Options, Activity 18	0
Capital Stock Schedule Stock Options, Activity 19	8,788,636
Capital Stock Schedule Stock Options, Activity 20	2.01
Capital Stock Schedule Stock Options, Activity 21	5.32
Capital Stock Schedule Stock Options, Activity 22	(631,250)
Capital Stock Schedule Stock Options, Activity 23	0.42
Capital Stock Schedule Stock Options, Activity 24	2.95
Capital Stock Schedule Stock Options, Activity 25	(97,250)
Capital Stock Schedule Stock Options, Activity 26	3.95
Capital Stock Schedule Stock Options, Activity 27	6.73
Capital Stock Schedule Stock Options, Activity 28	$ 8,060,136
Capital Stock Schedule Stock Options, Activity 29	2.11
Capital Stock Schedule Stock Options, Activity 30	5.23