GOODWILL AND INTANGIBLE ASSETS (Details Textuals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		3 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2012	Jan. 31, 2011	Oct. 31, 2011 Brazil Acquisition [Member]
Acquired Finite-lived Intangible Asset, Approximate Value					$ 20,000
Goodwill, Acquired During Period, Approximate Value					10,000
Amortization expense for Intangible assets	4,598	3,313	8,790	6,509
Estimated amortization expense for intangible assets, remainder of 2012			9,129
Estimated amortization expense for intangible assets, 2013			12,394
Estimated amortization expense for intangible assets, 2014			10,295
Estimated amortization expense for intangible assets, 2015			8,637
Estimated amortization expense for intangible assets, 2016			7,509
Estimated amortization expense for intangible assets, 2017			$ 7,419