Investments in Non-Performing Loan Portfolios and Foreclosed Real Estate (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Oct. 31, 2011
Summary of accretable yield and nonaccretable difference on investments in non-performing loans portfolios
Contractually required payments, including interest	$ 200,047
Nonaccretable difference	(81,723)
Cash flows expected to be collected	118,324
Accretable difference	(51,462)
Non-performing loans carrying amount	66,862
Investment in non-performing loan portfolios
Unpaid principal balance	171,559
Discount on acquired loans	(108,325)
Carrying value	63,234
Activity in accretable yield for investment in non-performing loan portfolios
Beginning Balance	0
Additions	51,462
Accretions	(4,480)
Reductions from foreclosures and other dispositions	(4,599)
Other	(57)
Ending Balance	$ 42,326

Certain loans acquired in transfer accounted for as debt securities, accretable yield, other.

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Certain Loans Acquired in Transfer Accounted for as Debt Securities Discount on Acquired Loans

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Certain loans acquired in transfer accounted for as debt securities, nonaccretable difference.

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Certain loans acquired in transfer accounted for as nonperforming debt securities carrying amount.

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The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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Increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, due to the acquisition of similar loans accounted for as debt securities during the period.

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Sale or transfer of a loan accounted for as a debt security, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, during the period resulting in a reduction in the excess of a loan's cash flows expected to be collected over the investor's initial investment.

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For loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, the total undiscounted amount of all uncollected contractual principal and contractual interest payments both past due and scheduled for the future, adjusted for the timing of prepayments, if considered, less any reduction by the investor at the acquisition date. For an acquired asset-backed security with required contractual payments of principal and interest, the "contractually required payments receivable" is represented by the contractual terms of the security. However, when contractual payments of principal and interest are not specified by the security, the investor should look to the contractual terms of the underlying loans or assets.

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- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accreditable yield and other-than-temporary impairments), for certain contractual rights to receive money on demand or on fixed or determinable dates (that is, loans) accounted for as debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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For loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable, that have a net carrying amount, the undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. Amounts forgiven in a debt restructuring but contingently payable to the investor should be included in the forgiven contract balance, but amounts irrevocably forgiven in a debt restructuring should not be included. Amounts payable to the investor in cash, in kind, and by any other means should be included. Amounts legally discharged should not be included. The outstanding balance does not include amounts that would be accrued under the contract as interest, fees, penalties, and other after the reporting date.

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