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Loans And Allowance For Loan Losses (Schedule Of Defaults During Stated Period Of Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 contract | Dec. 31, 2012 Commercial Real Estate [Member] contract | Dec. 31, 2011 Commercial [Member] contract | Dec. 31, 2011 Consumer [Member] contract
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | 3 | 3 | 2 | 1
Recorded Investment | $ 3,626 | $ 798 | $ 3,596 | $ 30

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- Definition Financing receivables, defaults, number of defaults + References No definition available. + Details
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Namespace Prefix: | cik0001275101_
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Balance Type: | na
Period Type: | duration

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- Definition Financing receivables defaults, recorded investment at default date + References No definition available. + Details
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Namespace Prefix: | cik0001275101_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration