Income Taxes Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Unrecognized tax benefits
Beginning Balance	$ 857,000	$ 9,538,000	$ 9,474,000
Additions for tax provisions of prior years	1,117,000	324,000	31,000
Additions based on tax provisions related to current year	0	55,000	33,000
Reductions for tax provisions of prior years	(176,000)	0	0
Reductions for settlements with taxing authorities	0	(8,752,000)	0
Lapse of statute of limitations	0	(308,000)	0
Ending Balance	1,798,000	857,000	9,538,000
Non-current tax benefits that would change the effective tax rate if recognized	$ 1,800,000	$ 900,000	$ 9,500,000