Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions				$ 950
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 820	$ 892	$ 1,641	1,783
Expected return on plan assets	(864)	(1,142)	(1,728)	(2,284)
Defined Benefit Plan, Actuarial Gain (Loss)			(754)
Defined Benefit Plan, Amortization of Gains (Losses)	(377)	(310)		(620)
Net periodic (benefit) cost	333	60	667	119
United States Postretirement Benefit Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	3	4	6	8
Expected return on plan assets	0	0	0	0
Defined Benefit Plan, Amortization of Gains (Losses)	(2)	(3)	(5)	(6)
Net periodic (benefit) cost	$ 5	$ 7	$ 11	$ 14