| **Loans and Allowance - Summary of Troubled Debt Restructurings by Modification (Details) - USD ($) $ in Thousands** | Dec. 31, 2015 | Dec. 31, 2014 |
|----------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | $ 5,378       | $ 1,263       |
| Term Modification                                                                                                    |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 2,815         | 319           |
| Rate Modification                                                                                                    |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 439           | 318           |
| Combination                                                                                                          |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 2,124         | 626           |
| Commercial and industrial loans                                                                                      |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 1,814         |          |
| Commercial and industrial loans | Term Modification                                                                  |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 761           |          |
| Commercial and industrial loans | Combination                                                                        |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 1,053         |          |
| Commercial and farmland                                                                                              |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 2,257         | 288           |
| Commercial and farmland | Term Modification                                                                          |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 1,231         | $ 288         |
| Commercial and farmland | Rate Modification                                                                          |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   |          |               |
| Commercial and farmland | Combination                                                                                |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 1,026         |               |
| Residential                                                                                                          |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 1,038         | $ 609         |
| Residential | Term Modification                                                                                      |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 823           | 31            |
| Residential | Rate Modification                                                                                      |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 170           | 218           |
| Residential | Combination                                                                                            |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 45            | 360           |
| Home equity                                                                                                          |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | 242           | $ 343         |
| Home equity | Term Modification                                                                                      |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   |          |               |
| Home equity | Rate Modification                                                                                      |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | $ 242         | $ 100         |
| Home equity | Combination                                                                                            |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   |               | 243           |
| Individuals' loans for household and other personal expenditures                                                     |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | $ 27          | $ 23          |
| Individuals' loans for household and other personal expenditures | Term Modification                                 |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   |          |               |
| Individuals' loans for household and other personal expenditures | Rate Modification                                 |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   | $ 27          |               |
| Individuals' loans for household and other personal expenditures | Combination                                       |          |          |
| **Financing Receivable, Modifications [Line Items]**                                                                 |          |          |
| Total Modification                                                                                                   |               | $ 23          |

| 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.
+ Details**Name:**us-gaap_FinancingReceivableModificationsLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554
+ Details**Name:**us-gaap_FinancingReceivableModificationsRecordedInvestment**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**instant |
| X                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                             |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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