Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Summary of Significant Accounting Policies [Abstract]
Allowance for Doubtful Accounts Receivable	$ 0	$ 0
Impairment of Long-Lived Assets Held-for-use	551,000
Incremental Common Shares Attributable to Call Options and Warrants	1,877,876	1,757,283
Deferred Revenue		273,000
Reduction of deferred revenue		66,000
Inventories	$ (149,000)	$ (207,000)