| **Loans and Allowance for Loan Losses (Impaired Loans, Average Recorded Investment and Interest Income Recognized) (Details) (USD $)** | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| With no related alowance recorded, average recorded investment                                                                         | $ 71,121,000    | $ 100,306,000 |
| With no related allowance recorded, interest income recognized                                                                         | 624,000         | 27,000 |
| With an allowance recorded, average recorded investment                                                                                | 17,301,000      | 112,543,000 |
| With an allowance recorded, interest income recognized                                                                                 | 522,000         | 7,000 |
| Impaired Financing Receivable, Average Recorded Investment                                                                             | 88,422,000      | 212,849,000 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                      | 1,146,000       | 34,000 |
| Financing Receivable, Modifications, Recorded Investment                                                                               | 20,800,000      | 28,300,000 |
| Commercial and agricultural [Member]                                                                                                   |            |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| With no related alowance recorded, average recorded investment                                                                         | 1,989,000       | 3,202,000 |
| With no related allowance recorded, interest income recognized                                                                         | 42,000          | 0 |
| With an allowance recorded, average recorded investment                                                                                | 706,000         | 4,458,000 |
| With an allowance recorded, interest income recognized                                                                                 | 16,000          | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                             | 2,695,000       | 7,660,000 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                      | 58,000          | 0 |
| Real estate - construction [Member]                                                                                                    |            |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| With no related alowance recorded, average recorded investment                                                                         | 15,130,000      | 41,164,000 |
| With no related allowance recorded, interest income recognized                                                                         | 92,000          | 1,000 |
| With an allowance recorded, average recorded investment                                                                                | 1,762,000       | 51,354,000 |
| With an allowance recorded, interest income recognized                                                                                 | 0               | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                             | 16,892,000      | 92,518,000 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                      | 92,000          | 1,000 |
| Real estate - mortgage, 1-4 family residential [Member]                                                                                |            |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| With no related alowance recorded, average recorded investment                                                                         | 18,237,000      | 17,077,000 |
| With no related allowance recorded, interest income recognized                                                                         | 204,000         | 1,000 |
| With an allowance recorded, average recorded investment                                                                                | 1,764,000       | 15,740,000 |
| With an allowance recorded, interest income recognized                                                                                 | 61,000          | 7,000 |
| Impaired Financing Receivable, Average Recorded Investment                                                                             | 20,001,000      | 32,817,000 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                      | 265,000         | 8,000 |
| Real estate - mortgage, commercial [Member]                                                                                            |            |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| With no related alowance recorded, average recorded investment                                                                         | 35,765,000      | 38,688,000 |
| With no related allowance recorded, interest income recognized                                                                         | 286,000         | 25,000 |
| With an allowance recorded, average recorded investment                                                                                | 13,069,000      | 40,777,000 |
| With an allowance recorded, interest income recognized                                                                                 | 445,000         | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                             | 48,834,000      | 79,465,000 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                      | 731,000         | 25,000 |
| Consumer [Member]                                                                                                                      |            |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| With no related alowance recorded, average recorded investment                                                                         | 0               | 175,000 |
| With no related allowance recorded, interest income recognized                                                                         | 0               | 0 |
| With an allowance recorded, average recorded investment                                                                                | 0               | 214,000 |
| With an allowance recorded, interest income recognized                                                                                 | 0               | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                             | 0               | 389,000 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                      | 0               | 0 |
| PC [Member]                                                                                                                            |            |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                        |            |   |
| Financing Receivable, Modifications, Recorded Investment                                                                               | $ 4,500,000     | $ 2,900,000 |

| X                                                                                                                                                                        |
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| - Definition
The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired.
+ References
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