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Employee Benefit Plans - Additional Information (Detail)	12 Months Ended
	Oct. 31, 2015 USD ($) item	Oct. 31, 2014 USD ($)	Oct. 31, 2013 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of defined contribution retirement plans \| item	5
Expenses incurred on defined contribution retirement plans \| $	$ 922,000	$ 943,000	$ 807,000
Expenses incurred on defined benefit retirement plans \| $	$ 10,000	$ 9,000	$ 12,000
Non Qualified Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of retired executives sponsored under the plan \| item	2