Intangible Assets and Goodwill - Summary of Goodwill by Segment (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
Apr. 30, 2015	Oct. 31, 2014
Goodwill [Roll Forward]
Net goodwill	$ 80,622us-gaap_Goodwill	$ 261,625us-gaap_Goodwill
Impairments		(178,197)us-gaap_GoodwillImpairmentLoss
Foreign currency translation and other	(520)us-gaap_GoodwillTranslationAdjustments	(2,806)us-gaap_GoodwillTranslationAdjustments
Gross goodwill	387,844us-gaap_GoodwillGross	388,364us-gaap_GoodwillGross
Accumulated impairment losses	(307,742)	(307,742)
Net goodwill	80,102us-gaap_Goodwill	80,622us-gaap_Goodwill
Americas
Goodwill [Roll Forward]
Net goodwill	74,415	74,943
Impairments		0
Foreign currency translation and other	(520)	(528)
Gross goodwill	73,895	74,415
Accumulated impairment losses	0	0
Net goodwill	73,895	74,415
EMEA
Goodwill [Roll Forward]
Net goodwill	0	180,475
Impairments		(178,197)
Foreign currency translation and other	0	(2,278)
Gross goodwill	178,197	178,197
Accumulated impairment losses	(178,197)	(178,197)
Net goodwill	0	0
APAC
Goodwill [Roll Forward]
Net goodwill	6,207	6,207
Impairments		0
Foreign currency translation and other	0	0
Gross goodwill	135,752	135,752
Accumulated impairment losses	(129,545)	(129,545)
Net goodwill	$ 6,207	$ 6,207

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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