Rialto Investments Segment (Accretable Yield For The FDIC Portfolios And Bank Portfolios) (Details) (Rialto Investments [Member], FDIC Portfolios And Bank Portfolios [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
May 31, 2012	May 31, 2011
Rialto Investments [Member] \| FDIC Portfolios And Bank Portfolios [Member]
Segment Reporting Information [Line Items]
Additions	$ 8,423	$ 16,173
Deletions	(23,256)	(37,869)
Accretions	(40,890)	(61,114)
Accretable yield, end of period	153,757	313,501
Accretable yield, beginning of period	$ 209,480	$ 396,311

Rialto Investments Segment (Accretable Yield For The FDIC Portfolios And Bank Portfolios) (Details) (Rialto Investments [Member], FDIC Portfolios And Bank Portfolios [Member], USD $)
In Thousands, unless otherwise specified

6 Months Ended

May 31, 2012

May 31, 2011

Rialto Investments [Member] | FDIC Portfolios And Bank Portfolios [Member]

Segment Reporting Information [Line Items]

Additions

$ 8,423

$ 16,173

Deletions

(23,256)

(37,869)

Accretions

(40,890)

(61,114)

Accretable yield, end of period

153,757

313,501

Accretable yield, beginning of period

$ 209,480

$ 396,311

- Definition

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not 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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- Definition

The 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. This relates to loans not 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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- Definition

The increases in the aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not 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 not accounted for as debt securities during the period.

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- Definition

The sale or transfer of a loan 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. This relates to loans not 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.

+ References+ Details