Components of Net Periodic Benefit Cost of Defined Benefit Plans and Post-Retirement Benefit Plans (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Defined Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 48	$ 46	$ 44
Interest	495	569	592
Expected return on assets	(486)	(373)	(399)
Amortization of actuarial loss	97	114	66
Settlement loss recognized	107	126	91
Net expense	261	482	394
Post-Retirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	12	13	15
Interest	246	256	281
Net expense	$ 258	$ 269	$ 296