Employee Benefits (Schedule of Change in Benefit Obligations and Changes in Fair Value of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginnning of year	$ 64,989	$ 54,751	$ 47,658
Service cost	4,937	4,749	3,969
Interest cost	3,053	2,973	2,670
Benefits paid	(1,308)	(1,440)	(1,228)
Curtailment (gain)	0	0	(594)
Actuarial loss	16,936	3,956	2,276
Benefit obligation, end of year	88,607	64,989	54,751
Change in plan assets [Roll Forward]
Fair value of plan assets, beginning of year	39,098	33,444	26,399
Actual return of plan assets	4,411	1,474	4,509
Employer contributions	5,226	5,620	3,764
Benefits paid	(1,308)	(1,440)	(1,228)
Fair value of plan assets, end of year	47,427	39,098	33,444
Funded status at end of year	$ (41,180)	$ (25,891)	$ (21,307)