Employee Benefits (Schedule of Components of Net Periodic Pension Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Service cost	$ 1,846	$ 1,234	$ 3,692	$ 2,468
Interest cost	822	764	1,643	1,527
Expected returns on assets	(961)	(856)	(1,922)	(1,712)
Amortization of prior service cost	6	6	12	12
Amortization of transition obligation	0	5	0	10
Recognized net actuarial loss	546	281	1,093	563
Net periodic pension cost	$ 2,259	$ 1,434	$ 4,518	$ 2,868