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Note 17 (Detail) (USD $)	3 Months Ended
Note 17 (Detail) (USD $)	Jan. 31, 2013	Jan. 31, 2012	Oct. 31, 2012
Income Tax Expense (Benefit)	$ (9,494,000)	$ 703,000
Deferred Tax Assets, Valuation Allowance	$ 943,900,000		$ 937,900,000

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

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.