CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Share Issuance Obligation [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]	Total
Beginning Balance at Jul. 31, 2012	$ 84,975	$ 196,486,881	$ 194,700	$ (120,823,948)	$ (22,127)	$ 75,920,481
Beginning Balance (Shares) at Jul. 31, 2012	84,975,155
Common stock issued for exercise of stock options and warrants	446	41,202				41,648
Common stock issued for exercise of stock options and warrants (Shares)	445,298
Common stock issued for Yuty Settlement Agreement	76	190,424				190,500
Common stock issued for Yuty Settlement Agreement (Shares)	75,000
Options issued for consulting services		270,488				270,488
Options issued for wages and benefits		268,452				268,452
Net loss for the period				(12,885,833)		(12,885,833)
Unrealized loss on available-for-sale securities					(4,159)	(4,159)
Ending Balance at Jan. 31, 2013	$ 85,497	$ 197,257,447	$ 194,700	$ (133,709,781)	$ (26,286)	$ 63,801,577
Ending Balance (Shares) at Jan. 31, 2013	85,495,453