| **Loans and Allowance for Loan Losses (Past Due Status) (Details) (USD $)In Thousands, unless otherwise specified** | Sep. 30, 2013 | Dec. 31, 2012 |
|---------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | $ 1,953       | $ 11,443      |  |
| 60 - 89 days past due                                                                                               | 1,519         | 5,795         |  |
| More than 90 days past due                                                                                          | 29,680        | 24,060        |  |
| Nonaccrual                                                                                                          | 51,131        | 79,242        |  |
| Total past due and nonaccrual                                                                                       | 84,283        | 120,540       |  |
| Current and accruing                                                                                                | 1,110,859     | 1,056,495     |  |
| Loans held for investment                                                                                           | 1,195,142     | 1,177,035     | [1] |
| Commercial and agricultural [Member]                                                                                |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| Loans held for investment                                                                                           | 69,617        | 79,704        |  |
| Real estate - construction [Member]                                                                                 |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| Loans held for investment                                                                                           | 67,542        | 58,414        |  |
| Real estate - mortgage, 1-4 family residential [Member]                                                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| Loans held for investment                                                                                           | 618,262       | 553,538       |  |
| Real estate - mortgage, commercial [Member]                                                                         |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| Loans held for investment                                                                                           | 395,086       | 441,836       |  |
| Consumer [Member]                                                                                                   |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| Loans held for investment                                                                                           | 44,635        | 43,543        |  |
| PC [Member]                                                                                                         |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 1,685         | 7,355         |  |
| 60 - 89 days past due                                                                                               | 925           | 999           |  |
| More than 90 days past due                                                                                          | 76            | 227           |  |
| Nonaccrual                                                                                                          | 51,131        | 79,242        |  |
| Total past due and nonaccrual                                                                                       | 53,817        | 87,823        |  |
| Current and accruing                                                                                                | 964,732       | 860,820       |  |
| Loans held for investment                                                                                           | 1,018,549     | 948,643       |  |
| PC [Member] | Commercial and agricultural [Member]                                                                  |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 52            | 515           |  |
| 60 - 89 days past due                                                                                               | 0             | 0             |  |
| More than 90 days past due                                                                                          | 0             | 50            |  |
| Nonaccrual                                                                                                          | 590           | 2,746         |  |
| Total past due and nonaccrual                                                                                       | 642           | 3,311         |  |
| Current and accruing                                                                                                | 57,558        | 61,727        |  |
| Loans held for investment                                                                                           | 58,200        | 65,038        |  |
| PC [Member] | Real estate - construction [Member]                                                                   |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 47            | 26            |  |
| 60 - 89 days past due                                                                                               | 0             | 119           |  |
| More than 90 days past due                                                                                          | 76            | 0             |  |
| Nonaccrual                                                                                                          | 10,190        | 14,297        |  |
| Total past due and nonaccrual                                                                                       | 10,313        | 14,442        |  |
| Current and accruing                                                                                                | 47,034        | 41,290        |  |
| Loans held for investment                                                                                           | 57,347        | 55,732        |  |
| PC [Member] | Real estate - mortgage, 1-4 family residential [Member]                                               |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 1,269         | 6,173         |  |
| 60 - 89 days past due                                                                                               | 759           | 880           |  |
| More than 90 days past due                                                                                          | 0             | 0             |  |
| Nonaccrual                                                                                                          | 12,822        | 18,372        |  |
| Total past due and nonaccrual                                                                                       | 14,850        | 25,425        |  |
| Current and accruing                                                                                                | 573,700       | 488,898       |  |
| Loans held for investment                                                                                           | 588,550       | 514,323       |  |
| PC [Member] | Real estate - mortgage, commercial [Member]                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 220           | 617           |  |
| 60 - 89 days past due                                                                                               | 153           | 0             |  |
| More than 90 days past due                                                                                          | 0             | 177           |  |
| Nonaccrual                                                                                                          | 27,425        | 43,621        |  |
| Total past due and nonaccrual                                                                                       | 27,798        | 44,415        |  |
| Current and accruing                                                                                                | 243,108       | 226,948       |  |
| Loans held for investment                                                                                           | 270,906       | 271,363       |  |
| PC [Member] | Consumer [Member]                                                                                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 97            | 24            |  |
| 60 - 89 days past due                                                                                               | 13            | 0             |  |
| More than 90 days past due                                                                                          | 0             | 0             |  |
| Nonaccrual                                                                                                          | 104           | 206           |  |
| Total past due and nonaccrual                                                                                       | 214           | 230           |  |
| Current and accruing                                                                                                | 43,332        | 41,957        |  |
| Loans held for investment                                                                                           | 43,546        | 42,187        |  |
| PI [Member]                                                                                                         |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 268           | 4,088         |  |
| 60 - 89 days past due                                                                                               | 594           | 4,796         |  |
| More than 90 days past due                                                                                          | 29,604        | 23,833        |  |
| Nonaccrual                                                                                                          | 0             | 0             |  |
| Total past due and nonaccrual                                                                                       | 30,466        | 32,717        |  |
| Current and accruing                                                                                                | 146,127       | 195,675       |  |
| Loans held for investment                                                                                           | 176,593       | 228,392       |  |
| PI [Member] | Commercial and agricultural [Member]                                                                  |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 77            | 100           |  |
| 60 - 89 days past due                                                                                               | 0             | 1             |  |
| More than 90 days past due                                                                                          | 2,235         | 1,103         |  |
| Nonaccrual                                                                                                          | 0             | 0             |  |
| Total past due and nonaccrual                                                                                       | 2,312         | 1,204         |  |
| Current and accruing                                                                                                | 9,106         | 13,462        |  |
| Loans held for investment                                                                                           | 11,418        | 14,666        |  |
| PI [Member] | Real estate - construction [Member]                                                                   |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 0             | 117           |  |
| 60 - 89 days past due                                                                                               | 0             | 0             |  |
| More than 90 days past due                                                                                          | 2,884         | 655           |  |
| Nonaccrual                                                                                                          | 0             | 0             |  |
| Total past due and nonaccrual                                                                                       | 2,884         | 772           |  |
| Current and accruing                                                                                                | 7,312         | 1,910         |  |
| Loans held for investment                                                                                           | 10,196        | 2,682         |  |
| PI [Member] | Real estate - mortgage, 1-4 family residential [Member]                                               |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 10            | 1,308         |  |
| 60 - 89 days past due                                                                                               | 0             | 495           |  |
| More than 90 days past due                                                                                          | 5,242         | 4,678         |  |
| Nonaccrual                                                                                                          | 0             | 0             |  |
| Total past due and nonaccrual                                                                                       | 5,252         | 6,481         |  |
| Current and accruing                                                                                                | 24,460        | 32,734        |  |
| Loans held for investment                                                                                           | 29,712        | 39,215        |  |
| PI [Member] | Real estate - mortgage, commercial [Member]                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 174           | 2,559         |  |
| 60 - 89 days past due                                                                                               | 594           | 4,300         |  |
| More than 90 days past due                                                                                          | 19,228        | 17,384        |  |
| Nonaccrual                                                                                                          | 0             | 0             |  |
| Total past due and nonaccrual                                                                                       | 19,996        | 24,243        |  |
| Current and accruing                                                                                                | 104,182       | 146,230       |  |
| Loans held for investment                                                                                           | 124,178       | 170,473       |  |
| PI [Member] | Consumer [Member]                                                                                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                |          |          |  |
| 30 - 59 days past due                                                                                               | 7             | 4             |  |
| 60 - 89 days past due                                                                                               | 0             | 0             |  |
| More than 90 days past due                                                                                          | 15            | 13            |  |
| Nonaccrual                                                                                                          | 0             | 0             |  |
| Total past due and nonaccrual                                                                                       | 22            | 17            |  |
| Current and accruing                                                                                                | 1,067         | 1,339         |  |
| Loans held for investment                                                                                           | $ 1,089       | $ 1,356       |  |
|                                                                                                                     |
| [1]Derived from audited consolidated financial statements                                                           |

| X                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Financing Receivable, Recorded Investment, Current and Accruing
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| X                                                                                                                                                                                                                                                                                                                            |
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| - Definition
Financing Receivable, Recorded Investment, Past Due and Nonaccrual Status
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Financing receivables that are less than 60 days past due but more than 29 days past due.
+ References
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| - Definition
Financing receivables that are less than 90 days past due but more than 59 days past due.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Financing receivables that are equal to or greater than 90 days past due.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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