Allowance For Loan Losses And Credit Quality Of Financing Receivables (Summary Of Troubled Debt Restructuring Subsequent Default) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012 Residential Real Estate [Member] contract	Dec. 31, 2011 Commercial Real Estate [Member] contract
Financing Receivable, Modifications [Line Items]
Number of loans with subsequent default	1	3
Recorded investment of loans with subsequent default	$ 228	$ 4,345

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953682-111524

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant