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, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Employee Benefits [Abstract]
Service cost	$ 1,234	$ 1,187	$ 2,468	$ 2,374
Interest cost	764	743	1,527	1,487
Expected returns on assets	(856)	(736)	(1,712)	(1,472)
Amortization of prior service cost	6	6	12	12
Amortization of transition obligation	5	5	10	10
Recognized net actuarial loss	281	188	563	376
Net periodic pension cost	$ 1,434	$ 1,393	$ 2,868	$ 2,787