Securitizations And Variable Interest Entities ("VIEs") (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Securitizations And Variable Interest Entities [Line Items]
Long term debt, VIEs	$ 0	$ 239,936
Interest-bearing deposits, VIEs	0	7,537
Aggregate loans, VIEs	0	248,333
Cumulative-effect adjustment, VIEs		5,805
Adjustment accumulated other comprehensive income	0	6,922
Retained interests, VIEs		23,705
2006 Transaction [Member]
Securitizations And Variable Interest Entities [Line Items]
Fixed-rate home mortgage loans and variable-rate line of credit loans	349,403
Excess percent of converted loans	10.00%
Percentage of principal balance of loans	10.00%
Purchase obligation at the cut-off date	11,140
Variable-rate loans	70.50%
Servicing assets	2,334
2005 Transaction [Member]
Securitizations And Variable Interest Entities [Line Items]
Home equity line of credit loans	239,766
Excess percent of converted loans	10.00%
Percentage of principal balance of loans	10.00%
Purchase obligation at the cut-off date	23,980
Variable-rate loans	35.40%
Servicing assets	$ 1,289

Loans And Leases Receivable Consumer Home Equity Securitized

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- Definition

Loans And Leases Receivable Fixed Rate Home Mortgage And Variable Rate Line Of Credit Securitized

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Maximum Purchase Obligation At Time Of Securitization Relating To Converted Loans

+ Details

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- Definition

Percentage of the original principal balance of the securitized loans used to determine the maximum principal balance of loans required to be purchased.

+ Details

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- Definition

Securitizations And Variable Interest Entities [Line Items]

+ Details

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- Definition

Fair value as of the date of securitization of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ Details

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- Definition

Supplemental Adjustment to Accumulated Other Comprehensive Income Consolidation of Variable Interest Entities

+ Details

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- Definition

Retained interests eliminated upon consolidation of variable interest entities.

+ Details

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- Definition

Supplemental interest-bearing deposits held by consolidated variable interest entities at time of original consolidation.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Supplemental loans held by consolidated variable interest entities at time of original consolidation.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Supplemental long-term debt of consolidated variable interest entities at time of original consolidation.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Threshold at which converted loans are required to be purchased, based upon the total outstanding balance of the securitized portfolio.

+ Details

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Data Type:	num:percentItemType
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- Definition

Variable Rate Loans At Time Of Securitization Containing A Conversion Provision

+ Details

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- Definition

The gross losses that make up a cumulative-effect adjustment on retained earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 65

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6934905&loc=SL6849109-159117

-Subparagraph (f)

+ Details

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