CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Beginning Balance at Jul. 31, 2014	$ 90,972	$ 208,008,312	$ (168,662,146)	$ (13,539)	$ 39,423,599
Beginning Balance (Shares) at Jul. 31, 2014	90,966,558
Common stock issued for equity financing, net of issuance costs	280	175,143			175,423
Common stock issued for equity financing, net of issuance costs (Shares)	280,045
Common stock issued for exercise of stock options	297	24,252			24,549
Common stock issued for exercise of stock options (Shares)	296,548
Stock-based compensation
Common stock issued for consulting services	891	1,379,388			1,380,279
Common stock issued for consulting services (Shares)	891,273
Options issued for consulting services		721,430			721,430
Options issued for management fees		1,424,585			1,424,585
Options issued for employees benefits		1,102,250			1,102,250
Net loss for the period			(17,949,496)		(17,949,496)
Other comprehensive loss				(1,465)	(1,465)
Ending Balance at Apr. 30, 2015	$ 92,440	$ 212,835,360	$ (186,611,642)	$ (15,004)	$ 26,301,154
Ending Balance (Shares) at Apr. 30, 2015	92,434,424