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Note 21 (Detail) - Financial Instruments Measured at Fair Value on a Recurring Basis (USD $) In Thousands, unless otherwise specified | Jul. 31, 2012 | Oct. 31, 2011
--- | --- | ---
Mortgage loans held for sale | $ 91,353 |  | $ 72,172 |
Mortgage Loans Held for Sale [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Mortgage loans held for sale | 91,898 | [1] | 73,126 | [1]
Interest Rate Lock Commitments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Mortgage loans held for sale | 326 |  | 142 |
Forward Contracts [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Mortgage loans held for sale | $ (871) |  | $ (1,096) |
[1] | The aggregate unpaid principal balance was $87.4 million and $70.4 million at July 31, 2012 and October 31, 2011, respectively.

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureRecurring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant