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Employee Benefit Plans - Narrative (Details) $ in Millions	12 Months Ended
Employee Benefit Plans - Narrative (Details) $ in Millions	Oct. 31, 2017 USD ($) item	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of defined contribution retirement plans	5
Expenses incurred on defined contribution retirement plans \| $	$ 1.2	$ 1.0	$ 1.0
Non-Qualified Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Number of retired executives sponsored under the plan	2