Share-Based Compensation (Tables)

12 Months Ended

Jul. 31, 2013

Share-Based Compensation [Abstract]

Schedule Of Weighted-Average Assumptions Used To Estimate Fair Value Of Option Grant

	For the years ended July 31,
	2013	2012
Volatility	134.80%	85.41%
Risk-free interest rate	0.85%	0.75%
Dividend yield	0.0%	0.0%
Expected life	5.06 years	4 years

Schedule Of Share-Based Compensation Expense Related To Stock Options And Restricted Stock Awards

	For the years ended July 31,
	2013		2012
Share-based compensation for employees and directors:
Selling, general and administrative	$	564,000	$	825,000
Research and development		154,000		257,000
		718,000		1,082,000
Share-based compensation for consultants:
Selling, general and administrative		0		(5,000)
Research and development		2,000		0
		2,000		(5,000)
Total share-based compensation expense	$	720,000	$	1,077,000