Accumulated Other Comprehensive (Loss) Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Apr. 30, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012
Accumulated Other Comprehensive (Loss) Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (4,861)	$ (4,861)	$ (4,803)	$ (4,819)
Other comprehensive (loss) income before reclassifications	(194)	(424)
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax	110	357
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	26	25
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(58)	(42)
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(4,464)	(4,464)	(4,619)	(4,446)
Other comprehensive (loss) income before reclassifications	0	(519)
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax	247	494
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	(92)	7
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	155	(18)
Available-for-sale Securities [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	143	143	276	180
Other comprehensive (loss) income before reclassifications	(67)	71
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax	(137)	(137)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	71	29
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(133)	(37)
Derivative [Member]
Accumulated Other Comprehensive (Loss) Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(540)	(540)	(460)	(553)
Other comprehensive (loss) income before reclassifications	(127)	24
Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent	47	(11)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (80)	$ 13