Pension and Other Post-Retirement Benefit Matters Early-Adoption of ASU 2017-07 - Impact (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	$ 54		$ 111
New Accounting Pronouncement, Early Adoption, Effect [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost		$ 57		$ 113
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 284	$ 306	$ 569	$ 628