| **Loans and Allowance for Loan Losses (Past Due Status) (Details) - USD ($) $ in Thousands**                                                   | Sep. 30, 2015 | Dec. 31, 2014 |
|------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | $ 18,378      | $ 25,288      |  |
| Total past due and nonaccrual                                                                                                                  | 35,315        | 51,628        |  |
| Current and accruing                                                                                                                           | 1,487,140     | 1,306,160     |  |
| Total Loans held for investment                                                                                                                | 1,522,455     | 1,357,788     | [1] |
| Financing Receivables, 30 to 59 Days Past Due [Member]                                                                                         |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 2,518         | 4,536         |  |
| Financing Receivables, 60 to 89 Days Past Due [Member]                                                                                         |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 917           | 647           |  |
| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                                                                         |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 13,502        | 21,157        |  |
| Commercial and agricultural [Member]                                                                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Total Loans held for investment                                                                                                                | 154,953       | 113,413       |  |
| Real estate - construction [Member]                                                                                                            |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Total Loans held for investment                                                                                                                | 86,307        | 78,327        |  |
| Real estate - mortgage, 1-4 family residential [Member]                                                                                        |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Total Loans held for investment                                                                                                                | 687,523       | 667,602       |  |
| Real estate - mortgage, commercial [Member]                                                                                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Total Loans held for investment                                                                                                                | 493,093       | 426,328       |  |
| Consumer [Member]                                                                                                                              |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Total Loans held for investment                                                                                                                | 100,579       | 72,118        |  |
| PC [Member]                                                                                                                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 18,378        | 25,288        |  |
| Total past due and nonaccrual                                                                                                                  | 20,823        | 29,474        |  |
| Current and accruing                                                                                                                           | 1,408,955     | 1,205,472     |  |
| Total Loans held for investment                                                                                                                | 1,429,778     | 1,234,946     |  |
| PC [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 1,826         | 3,668         |  |
| PC [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 601           | 513           |  |
| PC [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 18            | 5             |  |
| PC [Member] | Commercial and agricultural [Member]                                                                                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 429           | 608           |  |
| Total past due and nonaccrual                                                                                                                  | 436           | 608           |  |
| Current and accruing                                                                                                                           | 148,669       | 105,269       |  |
| Total Loans held for investment                                                                                                                | 149,105       | 105,877       |  |
| PC [Member] | Commercial and agricultural [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PC [Member] | Commercial and agricultural [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 7             | 0             |  |
| PC [Member] | Commercial and agricultural [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PC [Member] | Real estate - construction [Member]                                                                                              |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 488           | 2,307         |  |
| Total past due and nonaccrual                                                                                                                  | 505           | 2,407         |  |
| Current and accruing                                                                                                                           | 77,807        | 66,723        |  |
| Total Loans held for investment                                                                                                                | 78,312        | 69,130        |  |
| PC [Member] | Real estate - construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 17            | 100           |  |
| PC [Member] | Real estate - construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PC [Member] | Real estate - construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PC [Member] | Real estate - mortgage, 1-4 family residential [Member]                                                                          |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 9,370         | 8,637         |  |
| Total past due and nonaccrual                                                                                                                  | 10,704        | 11,503        |  |
| Current and accruing                                                                                                                           | 662,028       | 638,364       |  |
| Total Loans held for investment                                                                                                                | 672,732       | 649,867       |  |
| PC [Member] | Real estate - mortgage, 1-4 family residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                 |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 874           | 2,719         |  |
| PC [Member] | Real estate - mortgage, 1-4 family residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                 |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 442           | 147           |  |
| PC [Member] | Real estate - mortgage, 1-4 family residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 18            | 0             |  |
| PC [Member] | Real estate - mortgage, commercial [Member]                                                                                      |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 7,556         | 13,381        |  |
| Total past due and nonaccrual                                                                                                                  | 7,556         | 13,627        |  |
| Current and accruing                                                                                                                           | 422,452       | 325,356       |  |
| Total Loans held for investment                                                                                                                | 430,008       | 338,983       |  |
| PC [Member] | Real estate - mortgage, commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 105           |  |
| PC [Member] | Real estate - mortgage, commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 141           |  |
| PC [Member] | Real estate - mortgage, commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PC [Member] | Consumer [Member]                                                                                                                |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 535           | 355           |  |
| Total past due and nonaccrual                                                                                                                  | 1,622         | 1,329         |  |
| Current and accruing                                                                                                                           | 97,999        | 69,760        |  |
| Total Loans held for investment                                                                                                                | 99,621        | 71,089        |  |
| PC [Member] | Consumer [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                                       |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 935           | 744           |  |
| PC [Member] | Consumer [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                                       |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 152           | 225           |  |
| PC [Member] | Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                                       |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 5             |  |
| PI [Member]                                                                                                                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 0             | 0             |  |
| Total past due and nonaccrual                                                                                                                  | 14,492        | 22,154        |  |
| Current and accruing                                                                                                                           | 78,185        | 100,688       |  |
| Total Loans held for investment                                                                                                                | 92,677        | 122,842       |  |
| PI [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 692           | 868           |  |
| PI [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 316           | 134           |  |
| PI [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                                                           |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 13,484        | 21,152        |  |
| PI [Member] | Commercial and agricultural [Member]                                                                                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 0             | 0             |  |
| Total past due and nonaccrual                                                                                                                  | 1,788         | 2,232         |  |
| Current and accruing                                                                                                                           | 4,060         | 5,303         |  |
| Total Loans held for investment                                                                                                                | 5,848         | 7,535         |  |
| PI [Member] | Commercial and agricultural [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 49            | 0             |  |
| PI [Member] | Commercial and agricultural [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PI [Member] | Commercial and agricultural [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                    |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 1,739         | 2,232         |  |
| PI [Member] | Real estate - construction [Member]                                                                                              |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 0             | 0             |  |
| Total past due and nonaccrual                                                                                                                  | 1,481         | 3,737         |  |
| Current and accruing                                                                                                                           | 6,514         | 5,460         |  |
| Total Loans held for investment                                                                                                                | 7,995         | 9,197         |  |
| PI [Member] | Real estate - construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PI [Member] | Real estate - construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 0             |  |
| PI [Member] | Real estate - construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                     |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 1,481         | 3,737         |  |
| PI [Member] | Real estate - mortgage, 1-4 family residential [Member]                                                                          |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 0             | 0             |  |
| Total past due and nonaccrual                                                                                                                  | 1,867         | 2,803         |  |
| Current and accruing                                                                                                                           | 12,924        | 14,934        |  |
| Total Loans held for investment                                                                                                                | 14,791        | 17,737        |  |
| PI [Member] | Real estate - mortgage, 1-4 family residential [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                 |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 325           | 579           |  |
| PI [Member] | Real estate - mortgage, 1-4 family residential [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                 |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 0             | 15            |  |
| PI [Member] | Real estate - mortgage, 1-4 family residential [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 1,542         | 2,209         |  |
| PI [Member] | Real estate - mortgage, commercial [Member]                                                                                      |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 0             | 0             |  |
| Total past due and nonaccrual                                                                                                                  | 9,346         | 13,370        |  |
| Current and accruing                                                                                                                           | 53,739        | 73,975        |  |
| Total Loans held for investment                                                                                                                | 63,085        | 87,345        |  |
| PI [Member] | Real estate - mortgage, commercial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 316           | 287           |  |
| PI [Member] | Real estate - mortgage, commercial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 315           | 119           |  |
| PI [Member] | Real estate - mortgage, commercial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]             |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 8,715         | 12,964        |  |
| PI [Member] | Consumer [Member]                                                                                                                |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Nonaccrual                                                                                                                                     | 0             | 0             |  |
| Total past due and nonaccrual                                                                                                                  | 10            | 12            |  |
| Current and accruing                                                                                                                           | 948           | 1,016         |  |
| Total Loans held for investment                                                                                                                | 958           | 1,028         |  |
| PI [Member] | Consumer [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]                                                       |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 2             | 2             |  |
| PI [Member] | Consumer [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]                                                       |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | 1             | 0             |  |
| PI [Member] | Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]                                       |          |          |  |
| **Financing Receivable, Recorded Investment, Past Due [Line Items]**                                                                           |          |          |  |
| Investment past due                                                                                                                            | $ 7           | $ 10          |  |
|                                                                                                                                                |
| [1]Derived from audited consolidated financial statements                                                                                      |

| X                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Financing Receivable, Recorded Investment, Current and Accruing
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Financing Receivable, Recorded Investment, Past Due and Nonaccrual Status
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Recorded Investment in financing receivables that are past due at the balance sheet date.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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=28367877&loc=d3e4428-111522
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