Employee Retirement and Deferred Compensation Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Projected benefit obligation [Roll Forward]
Plan amendments adopted during year		$ 757	$ 768
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	(1,201)	1,699	(382)
Unamortized Prior Service Cost [Roll Forward]
Plan amendments adopted during year		757	768
Supplemental Employee Retirement Plan [Member]
Plan costs
Service cost	619	562	579
Interest cost	1,142	1,276	1,232
Amortization of prior service obligation	969	947	806
Amortization of unrecognized losses	137	42	81
Total costs	2,867	2,827	2,698
Projected benefit obligation [Roll Forward]
Projected Benefit Obligation, beginning of year	38,980	35,815	34,606
Plan amendments adopted during year		757	768
Service cost	619	562	579
Interest cost	1,142	1,276	1,232
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(1,318)	(1,129)	(988)
Defined Benefit Plan, Benefit Obligation, Period Increase (Decrease)	(1,201)	1,699	(382)
Projected Benefit Obligation, end of year	38,222	38,980	35,815
Unamortized Prior Service Cost [Roll Forward]
Unamorized Prior Service Cost, beginning of year	2,775	2,965	3,003
Plan amendments adopted during year		757	768
Amortization of prior service cost				$ (969)	$ (947)	$ (806)
Unamorized Prior Service Cost, end of year	1,806	2,775	2,965
Accumulated unrecognized loss				1,560	2,898	1,240
Accumulated Benefit Obligation				38,222	38,980	35,815
Accrued Benefit Obligation	$ 38,980	$ 35,815	$ 34,606	38,222	$ 38,980	$ 35,815
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year				1,358
Defined Benefit Plan, Expected Future Benefit Payment, Year Two				2,242
Defined Benefit Plan, Expected Future Benefit Payment, Year Three				2,444
Defined Benefit Plan, Expected Future Benefit Payment, Year Four				2,702
Defined Benefit Plan, Expected Future Benefit Payment, Year Five				2,893
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter				$ 15,736