GOODWILL AND INTANGIBLE ASSETS (Details Textuals) (USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended	12 Months Ended						3 Months Ended
	Jul. 31, 2012	Oct. 31, 2011 Brazil Acquisition [Member]	Jul. 31, 2012 Continuing Operations [Member]	Jul. 31, 2011 Continuing Operations [Member]	Jul. 31, 2010 Continuing Operations [Member]	Jul. 31, 2012 Discontinued Operations [Member]	Jul. 31, 2011 Discontinued Operations [Member]	Jul. 31, 2010 Discontinued Operations [Member]	Oct. 31, 2011 Industrial Segment [Member] Brazil Acquisition [Member]	Oct. 31, 2011 Life Sciences Segment [Member] Brazil Acquisition [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill held for sale as part of discontinued operations	$ 18,514
Intangible assets, net held for sale as part of discontinued operations	524
Allocation of acquisition to segments									66.6667%	33.3333%
Acquired Finite-lived Intangible Asset, Approximate Value		22,250
Goodwill, Acquired During Period, Approximate Value		9,000
Amortization expense for Intangible assets			20,535	13,436	11,535	182	209	231
Estimated amortization expense for intangible assets, 2013	19,254
Estimated amortization expense for intangible assets, 2014	17,062
Estimated amortization expense for intangible assets, 2015	15,489
Estimated amortization expense for intangible assets, 2016	14,288
Estimated amortization expense for intangible assets, 2017	$ 14,231