Components of Net Periodic Pension Cost (Detail) (Pension Plans, Defined Benefit, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Pension Plans, Defined Benefit
Net periodic benefit cost:
Service cost	$ 907	$ 980
Interest cost	194	204
Expected return on plan assets	(365)	(277)
Amortization of net loss	62	50
Net periodic benefit cost	$ 798	$ 957