Discontinued Operations - Assets And Liabilities Related To Divestiture (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jul. 31, 2013
Assets of Divested Operations
Cash	$ 1,611	$ 1,649
Trade and other accounts receivable	3,513	4,261
Prepaid and other current assets	265	231
Property and equipment, net	441	483
Investments	596	990
Total assets	6,426	7,614
Liabilities of Divested Operations
Accounts payable	2,053	2,145
Accrued expenses and other	757	967
Notes payable - related parties	3,140	3,189
Total Liabilities	$ 5,950	$ 6,301