| **Loans and Allowance for Loan Losses (Evaluation for Impairment) (Details) - USD ($) $ in Thousands** | Sep. 30, 2015 | Jun. 30, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Dec. 31, 2013 |
|--------------------------------------------------------------------------------------------------------|---------------|---------------|---------------|---------------|---------------|---------------|
| **Financing Receivable, Allowance for Credit Losses [Line Items]**                                     |          |          |          |               |          |          |   |
| ALL, individually evaluated for impairment                                                             | $ 344         |          | $ 418         |               |          |          |   |
| ALL, collectively evaluated for impairment                                                             | 13,654        |          | 16,690        |               |          |          |   |
| ALL, PI loans reviewed for credit impairment                                                           | 3,190         |          | 3,237         |               |          |          |   |
| ALL, PI loans with no credit deterioration                                                             | 0             |          | 0             |               |          |          |   |
| Total ALL evaluated for impairment                                                                     | 17,188        | $ 17,989      | 20,345        |               | $ 21,525      | $ 23,975      | $ 26,785 |
| Loans held for investment, individually evaluated for impairment                                       | 27,465        |          | 34,482        |               |          |          |   |
| Loans held for investment, collectively evaluated for impairment                                       | 1,402,313     |          | 1,200,464     |               |          |          |   |
| Loans held for investment, PI loans with subsequent credit deterioration                               | 89,292        |          | 118,701       |               |          |          |   |
| Loans held for investment, PI loans with no credit deterioration                                       | 3,385         |          | 4,141         |               |          |          |   |
| Total Loans held for investment                                                                        | 1,522,455     |          | 1,357,788     | [1]           |          |          |   |
| Commercial and agricultural [Member]                                                                   |          |          |          |               |          |          |   |
| **Financing Receivable, Allowance for Credit Losses [Line Items]**                                     |          |          |          |               |          |          |   |
| ALL, individually evaluated for impairment                                                             | 0             |          | 58            |               |          |          |   |
| ALL, collectively evaluated for impairment                                                             | 2,446         |          | 3,600         |               |          |          |   |
| ALL, PI loans reviewed for credit impairment                                                           | 218           |          | 257           |               |          |          |   |
| ALL, PI loans with no credit deterioration                                                             | 0             |          | 0             |               |          |          |   |
| Total ALL evaluated for impairment                                                                     | 2,664         | 2,712         | 3,915         |               | 3,320         | 3,508         | 2,931 |
| Loans held for investment, individually evaluated for impairment                                       | 399           |          | 498           |               |          |          |   |
| Loans held for investment, collectively evaluated for impairment                                       | 148,706       |          | 105,380       |               |          |          |   |
| Loans held for investment, PI loans with subsequent credit deterioration                               | 5,848         |          | 7,535         |               |          |          |   |
| Loans held for investment, PI loans with no credit deterioration                                       | 0             |          | 0             |               |          |          |   |
| Total Loans held for investment                                                                        | 154,953       |          | 113,413       |               |          |          |   |
| Real estate - construction [Member]                                                                    |          |          |          |               |          |          |   |
| **Financing Receivable, Allowance for Credit Losses [Line Items]**                                     |          |          |          |               |          |          |   |
| ALL, individually evaluated for impairment                                                             | 0             |          | 0             |               |          |          |   |
| ALL, collectively evaluated for impairment                                                             | 1,366         |          | 2,656         |               |          |          |   |
| ALL, PI loans reviewed for credit impairment                                                           | 665           |          | 507           |               |          |          |   |
| ALL, PI loans with no credit deterioration                                                             | 0             |          | 0             |               |          |          |   |
| Total ALL evaluated for impairment                                                                     | 2,031         | 2,207         | 3,163         |               | 3,768         | 4,778         | 5,233 |
| Loans held for investment, individually evaluated for impairment                                       | 840           |          | 2,344         |               |          |          |   |
| Loans held for investment, collectively evaluated for impairment                                       | 77,472        |          | 66,786        |               |          |          |   |
| Loans held for investment, PI loans with subsequent credit deterioration                               | 7,547         |          | 8,619         |               |          |          |   |
| Loans held for investment, PI loans with no credit deterioration                                       | 448           |          | 578           |               |          |          |   |
| Total Loans held for investment                                                                        | 86,307        |          | 78,327        |               |          |          |   |
| Real estate - mortgage, 1-4 family residential [Member]                                                |          |          |          |               |          |          |   |
| **Financing Receivable, Allowance for Credit Losses [Line Items]**                                     |          |          |          |               |          |          |   |
| ALL, individually evaluated for impairment                                                             | 344           |          | 331           |               |          |          |   |
| ALL, collectively evaluated for impairment                                                             | 4,581         |          | 5,317         |               |          |          |   |
| ALL, PI loans reviewed for credit impairment                                                           | 256           |          | 199           |               |          |          |   |
| ALL, PI loans with no credit deterioration                                                             | 0             |          | 0             |               |          |          |   |
| Total ALL evaluated for impairment                                                                     | 5,181         | 5,517         | 5,847         |               | 6,355         | 7,410         | 8,869 |
| Loans held for investment, individually evaluated for impairment                                       | 12,093        |          | 11,409        |               |          |          |   |
| Loans held for investment, collectively evaluated for impairment                                       | 660,639       |          | 638,456       |               |          |          |   |
| Loans held for investment, PI loans with subsequent credit deterioration                               | 11,854        |          | 14,174        |               |          |          |   |
| Loans held for investment, PI loans with no credit deterioration                                       | 2,937         |          | 3,563         |               |          |          |   |
| Total Loans held for investment                                                                        | 687,523       |          | 667,602       |               |          |          |   |
| Real estate - mortgage, commercial [Member]                                                            |          |          |          |               |          |          |   |
| **Financing Receivable, Allowance for Credit Losses [Line Items]**                                     |          |          |          |               |          |          |   |
| ALL, individually evaluated for impairment                                                             | 0             |          | 29            |               |          |          |   |
| ALL, collectively evaluated for impairment                                                             | 1,229         |          | 2,065         |               |          |          |   |
| ALL, PI loans reviewed for credit impairment                                                           | 1,906         |          | 2,085         |               |          |          |   |
| ALL, PI loans with no credit deterioration                                                             | 0             |          | 0             |               |          |          |   |
| Total ALL evaluated for impairment                                                                     | 3,135         | 3,306         | 4,179         |               | 5,128         | 5,666         | 7,195 |
| Loans held for investment, individually evaluated for impairment                                       | 14,133        |          | 20,231        |               |          |          |   |
| Loans held for investment, collectively evaluated for impairment                                       | 415,875       |          | 318,752       |               |          |          |   |
| Loans held for investment, PI loans with subsequent credit deterioration                               | 63,085        |          | 87,345        |               |          |          |   |
| Loans held for investment, PI loans with no credit deterioration                                       | 0             |          | 0             |               |          |          |   |
| Total Loans held for investment                                                                        | 493,093       |          | 426,328       |               |          |          |   |
| Consumer [Member]                                                                                      |          |          |          |               |          |          |   |
| **Financing Receivable, Allowance for Credit Losses [Line Items]**                                     |          |          |          |               |          |          |   |
| ALL, individually evaluated for impairment                                                             | 0             |          | 0             |               |          |          |   |
| ALL, collectively evaluated for impairment                                                             | 4,032         |          | 3,052         |               |          |          |   |
| ALL, PI loans reviewed for credit impairment                                                           | 145           |          | 189           |               |          |          |   |
| ALL, PI loans with no credit deterioration                                                             | 0             |          | 0             |               |          |          |   |
| Total ALL evaluated for impairment                                                                     | 4,177         | $ 4,247       | 3,241         |               | $ 2,954       | $ 2,613       | $ 2,557 |
| Loans held for investment, individually evaluated for impairment                                       | 0             |          | 0             |               |          |          |   |
| Loans held for investment, collectively evaluated for impairment                                       | 99,621        |          | 71,090        |               |          |          |   |
| Loans held for investment, PI loans with subsequent credit deterioration                               | 958           |          | 1,028         |               |          |          |   |
| Loans held for investment, PI loans with no credit deterioration                                       | 0             |          | 0             |               |          |          |   |
| Total Loans held for investment                                                                        | $ 100,579     |          | $ 72,118      |               |          |          |   |
|                                                                                                        |
| [1]Derived from audited consolidated financial statements                                              |

| X                                                                                                                                                                                                                                                                                                                             |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The balance of financing receivables that were acquired with no credit deterioration.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                        |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The valuation allowance for financing recievable acquired with no credit deterioration.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
For loans and debt securities, 1) for which at acquisition it was probable that the investor would be unable to collect all contractually required payments receivable, and 2) for which it is further probable that the investor will not be able to collect all cash flows expected at acquisition (plus any additional cash flows expected due to changes in estimate after acquisition), the allowance for credit losses recorded to reflect the impairment since acquisition.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The recorded amount of loans and debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it was probable, at acquisition, that the investor would be unable to collect all contractually required payments receivable. They are deemed to be impaired since the acquisition and an allowance for credit losses has been recorded. Disclosure is gross of the allowance.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
A valuation allowance for financing receivables that are expected to be uncollectible.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.
+ References
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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
The balance of financing receivables that were collectively evaluated for impairment.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The balance of financing receivables that were individually evaluated for impairment.
+ References
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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
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