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Changes to Deferred Tax Asset Valuation Allowance (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Valuation Allowance [Line Items]
Valuation allowance at the beginning of the year	$ 5,784	$ 6,290	$ 6,147
Acquisition of Linc		290
Other, net	242	(796)	143
Valuation allowance at the end of the year	$ 6,026	$ 5,784	$ 6,290

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.