Income Taxes - Reconciliation Between Income Tax Expense (Benefit) Recognized And Computed (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Reconciliation
Income tax expense at federal statutory rate (35%)	$ 85	$ 186
State income taxes	13	13
Change in valuation allowance	382	(160)
Effect of tax rate differences and newly enacted tax rates in Puerto Rico	(245)	0
Imputed interest expense on notes payable - related parties	(193)	(32)
Other, net	(22)	13
Income tax expense	$ 20	$ 20