Stock-Based Compensation (Details Textual) (USD $)	1 Months Ended	3 Months Ended
	Nov. 01, 2012	Oct. 31, 2012	Jul. 31, 2012	Oct. 31, 2012 Stock Option Plan 2000 [Member]	Jul. 31, 2012 Stock Option Plan 2000 [Member]	Oct. 31, 2012 Stock Option Plan 2001 [Member]	Jul. 31, 2012 Stock Option Plan 2001 [Member]	Oct. 31, 2012 Stock Option Plan 2006 [Member]	Jul. 31, 2012 Stock Option Plan 2006 [Member]	Jul. 31, 2009 Stock Option Plan 2006 [Member]
Common Stock, Capital Shares Reserved for Future Issuance				2,000,000	2,000,000	4,124,444	12,000,000	8,354,823	30,000,000	10,000,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized		$ 37,367
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	11 months 9 days	3 years 10 months 3 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		10,979,634	10,979,634