| **Loans and Allowance for Loan Losses (Impaired Loans, Average Recorded Investment and Interest Income Recognized) (Details) (USD $)In Thousands, unless otherwise specified** | 12 Months Ended |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Financing Receivable, Impaired [Line Items]**                                                                                                                                |            |   |   |
| With no related alowance recorded, average recorded investment                                                                                                                 | $ 51,163        | $ 71,121 | $ 100,306 |
| With no related allowance recorded, interest income recognized                                                                                                                 | 397             | 624 | 27 |
| With an allowance recorded, average recorded investment                                                                                                                        | 7,844           | 17,301 | 112,543 |
| With an allowance recorded, interest income recognized                                                                                                                         | 39              | 522 | 7 |
| Impaired Financing Receivable, Average Recorded Investment                                                                                                                     | 59,007          | 88,422 | 212,849 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                                                              | 436             | 1,146 | 34 |
| Commercial and agricultural [Member]                                                                                                                                           |            |   |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                                                                |            |   |   |
| With no related alowance recorded, average recorded investment                                                                                                                 | 784             | 1,989 | 3,202 |
| With no related allowance recorded, interest income recognized                                                                                                                 | 8               | 42 | 0 |
| With an allowance recorded, average recorded investment                                                                                                                        | 283             | 706 | 4,458 |
| With an allowance recorded, interest income recognized                                                                                                                         | 5               | 16 | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                                                                     | 1,067           | 2,695 | 7,660 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                                                              | 13              | 58 | 0 |
| Real estate - construction [Member]                                                                                                                                            |            |   |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                                                                |            |   |   |
| With no related alowance recorded, average recorded investment                                                                                                                 | 9,075           | 15,130 | 41,164 |
| With no related allowance recorded, interest income recognized                                                                                                                 | 35              | 92 | 1 |
| With an allowance recorded, average recorded investment                                                                                                                        | 638             | 1,762 | 51,354 |
| With an allowance recorded, interest income recognized                                                                                                                         | 9               | 0 | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                                                                     | 9,713           | 16,892 | 92,518 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                                                              | 44              | 92 | 1 |
| Real estate - mortgage, 1-4 family residential [Member]                                                                                                                        |            |   |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                                                                |            |   |   |
| With no related alowance recorded, average recorded investment                                                                                                                 | 11,920          | 18,237 | 17,077 |
| With no related allowance recorded, interest income recognized                                                                                                                 | 100             | 204 | 1 |
| With an allowance recorded, average recorded investment                                                                                                                        | 2,713           | 1,764 | 15,740 |
| With an allowance recorded, interest income recognized                                                                                                                         | 20              | 61 | 7 |
| Impaired Financing Receivable, Average Recorded Investment                                                                                                                     | 14,633          | 20,001 | 32,817 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                                                              | 120             | 265 | 8 |
| Real estate - mortgage, commercial [Member]                                                                                                                                    |            |   |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                                                                |            |   |   |
| With no related alowance recorded, average recorded investment                                                                                                                 | 29,384          | 35,765 | 38,688 |
| With no related allowance recorded, interest income recognized                                                                                                                 | 254             | 286 | 25 |
| With an allowance recorded, average recorded investment                                                                                                                        | 4,127           | 13,069 | 40,777 |
| With an allowance recorded, interest income recognized                                                                                                                         | 4               | 445 | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                                                                     | 33,511          | 48,834 | 79,465 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                                                              | 258             | 731 | 25 |
| Consumer [Member]                                                                                                                                                              |            |   |   |
| **Financing Receivable, Impaired [Line Items]**                                                                                                                                |            |   |   |
| With no related alowance recorded, average recorded investment                                                                                                                 | 0               | 0 | 175 |
| With no related allowance recorded, interest income recognized                                                                                                                 | 0               | 0 | 0 |
| With an allowance recorded, average recorded investment                                                                                                                        | 83              | 0 | 214 |
| With an allowance recorded, interest income recognized                                                                                                                         | 1               | 0 | 0 |
| Impaired Financing Receivable, Average Recorded Investment                                                                                                                     | 83              | 0 | 389 |
| Impaired Financing Receivable, Interest Income, Cash Basis Method                                                                                                              | $ 1             | $ 0 | $ 0 |

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
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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.
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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.
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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.
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