Accrued Liabilities, Other Current Liabilities and Other Liabilities (Tables)

12 Months Ended

Jul. 31, 2016

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

At July 31 accrued liabilities consist of:

	2016		2015
Payroll, benefits, severance and commissions	$	3,956	$	3,907
Legal		954		4,183
Professional fees		503		678
Research and development		300		300
Other		2,498		2,229
	$	8,211	$	11,297