Employee Benefit Plans - Schedule of Amounts Recognized in Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Current liability	$ 476	$ 677
Non-current liability	7,580	12,346
Defined Benefit Plan, Benefit Obligation	$ 8,056	$ 13,023	$ 14,225