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Loans, Troubled Debt Restructuring (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2012
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable Modifications Number Of Contracts In Period | 0 | 2
Financing Receivable Modifications In Period Pre Modification Recorded Investment | $ 0 | $ 284
Financing Receivable Modifications In Period Post Modification Recorded Investment1 | 0 | 281
Financing Receivable Modifications Subsequent Default In Period Number Of Contracts | 0 | 2
Financing Receivable Modifications Subsequent Default In Period Recorded Investment | 0 | 114
Number of notes created |  | 2
Commercial RE [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable Modifications Number Of Contracts In Period | 0 | 1
Financing Receivable Modifications In Period Pre Modification Recorded Investment | 0 | 57
Financing Receivable Modifications In Period Post Modification Recorded Investment1 | 0 | 57
Residential RE [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable Modifications Number Of Contracts In Period | 0 | 1
Financing Receivable Modifications In Period Pre Modification Recorded Investment | 0 | 227
Financing Receivable Modifications In Period Post Modification Recorded Investment1 | 0 | 224
Financing Receivable Modifications Subsequent Default In Period Number Of Contracts | 0 | 1
Financing Receivable Modifications Subsequent Default In Period Recorded Investment | 0 | 50
Commercial Construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Financing Receivable Modifications Subsequent Default In Period Number Of Contracts | 0 | 1
Financing Receivable Modifications Subsequent Default In Period Recorded Investment | $ 0 | $ 64

X
- Definition Amount of investment in financing receivables (after modification) modified by troubled debt restructurings in the period. + References No definition available. + Details
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- Definition Amount of investment in financing receivables (before modification) modified by troubled debt restructurings in the period. + References No definition available. + Details
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Namespace Prefix: | cban_
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- Definition Number of financing receivables that have been modified by troubled debt restructurings in the period. + References No definition available. + Details
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- Definition Number of financing receivables that have been modified in period by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References No definition available. + Details
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- Definition Amount of investment related to financing receivables modified in period by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References No definition available. + Details
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- Definition Number of notes created in some commercial real estate loan workouts. + References No definition available. + Details
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- Details
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