Stockholders' Equity (Summary Of Restricted Stock Activity) (Details) - shares	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Comprehensive Loss [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance	4,825,000
Granted	600,000	6,230,000
Vested	(1,715,000)	(1,205,000)
Forfeited	(500,000)	(200,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance	3,210,000	4,825,000