GOODWILL AND INTANGIBLE ASSETS (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011	Jul. 31, 2011	Oct. 31, 2011 Brazil Acquisition [Member]
Disposal Group, Including Discontinued Operation, Goodwill	$ 22,018		$ 22,018		$ 19,261
Disposal Group, Including Discontinued Operation, Intangible Assets, Net	567		567		683
Acquired Finite-lived Intangible Asset, Approximate Value						22,250
Goodwill, Acquired During Period, Approximate Value						9,000
Amortization expense for Intangible assets	5,956	3,432	14,746	9,941
Estimated amortization expense for intangible assets, remainder of 2012			6,539
Estimated amortization expense for intangible assets, 2013			21,098
Estimated amortization expense for intangible assets, 2014			18,758
Estimated amortization expense for intangible assets, 2015			17,162
Estimated amortization expense for intangible assets, 2016			15,950
Estimated amortization expense for intangible assets, 2017			$ 15,891