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Loans, Allowance For Loan Losses And OREO (Schedule Of Defaults During Stated Period Of Troubled Debt Restructurings) (Details) (Commercial Loan [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2012
Commercial Loan [Member] |  |
Number of Contracts | 2 | 4
Recorded Investment | $ 208 | $ 798

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- Definition Financing receivables, defaults, number of defaults + References No definition available. + Details
Name: | cik0001275101_FinancingReceivablesDefaultsNumberOfDefaults
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
Name: | cik0001275101_FinancingReceivablesDefaultsRecordedInvestmentAtDefaultDate
Namespace Prefix: | cik0001275101_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration