NATURE OF OPERATIONS - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011		Jul. 31, 2012
Nature Of Operations [Line Items]
Revenue	$ 200,656	$ 205,908	[1]	$ 739,900

[1] As Restated