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Fair Value (Details 2) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | $ 5,536 | $ 7,338 | $ 10,082
Commercial real estate, Owner occupied | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 23 |
Other real estate owned, 1–4 family residential | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 16 |
Commercial real estate, Farmland | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 339 |
Commercial, Agricultural | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 113 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial real estate, Owner occupied | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other real estate owned, 1–4 family residential | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial real estate, Farmland | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial, Agricultural | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Significant Other Observable Inputs (Level 2) | Commercial real estate, Owner occupied | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Significant Other Observable Inputs (Level 2) | Other real estate owned, 1–4 family residential | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Significant Other Observable Inputs (Level 2) | Commercial real estate, Farmland | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Significant Other Observable Inputs (Level 2) | Commercial, Agricultural | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 0 |
Significant Unobservable Inputs (Level 3) | Commercial real estate, Owner occupied | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 23 |
Significant Unobservable Inputs (Level 3) | Other real estate owned, 1–4 family residential | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 16 |
Significant Unobservable Inputs (Level 3) | Commercial real estate, Farmland | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 339 |
Significant Unobservable Inputs (Level 3) | Commercial, Agricultural | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment |  | 113 |
Residential Real Estate | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 740 | 77 |
Residential Real Estate | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 0 | 0 |
Residential Real Estate | Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 0 | 0 |
Residential Real Estate | Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 740 | 77 |
Consumer | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 2 | 2 |
Consumer | Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 0 | 0 |
Consumer | Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | 0 | 0 |
Consumer | Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Recorded Investment | $ 2 | $ 2 |

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