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Loans, Allowance For Loan Losses And OREO (Schedule Of Defaults During Stated Period Of Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2012 contract | Sep. 30, 2011 contract
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts |  | 4
Recorded Investment |  | $ 695
Commercial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 4 | 1
Recorded Investment | 798 | 183
Consumer [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts |  | 1
Recorded Investment |  | 30
Residential Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts |  | 2
Recorded Investment |  | $ 482

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- Definition Financing receivables, defaults, number of defaults + References No definition available. + Details
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Namespace Prefix: | cik0001275101_
Data Type: | xbrli:integerItemType
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
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration