Income Taxes Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Unrecognized tax benefits
Beginning Balance	$ 9,474,000	$ 9,474,000	$ 9,975,000
Additions for tax provisions of prior years	31,000	0	245,000
Reductions for tax provisions of prior years	0	0	(771,000)
Additions based on tax provisions related to current year	33,000	0	30,000
Reductions for settlements with taxing authorities	0	0	(5,000)
Ending Balance	9,538,000	9,474,000	9,474,000
Non-current tax benefits that would change the effective tax rate if recognized	$ 9,500,000	$ 9,500,000	$ 9,500,000