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Fair Value Disclosures (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | $ 300,416 | $ 223,039 |  |
Allowance for loan losses, other real estate owned | 205 | 162 | $ 654 | $ 330
Allowance for impaired loans | 478 | 292 |  |
Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Interest rate swap agreements | 0 |  |  |
Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 300,416 | 223,039 |  |
Interest rate swap agreements | 1,790 |  |  |
Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Interest rate swap agreements | 0 |  |  |
Estimate of Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 300,416 | 223,039 |  |
Interest rate swap agreements | 1,790 |  |  |
Mortgage-backed securities |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 280,604 | 195,110 |  |
State and political subdivisions |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 16,482 | 24,506 |  |
Fair Value, Measurements, Recurring | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Assets measured at fair value | 0 |  |  |
Fair Value, Measurements, Recurring | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 300,416 | 223,039 |  |
Assets measured at fair value | 302,206 |  |  |
Fair Value, Measurements, Recurring | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Assets measured at fair value | 0 |  |  |
Fair Value, Measurements, Recurring | Estimate of Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 300,416 | 223,039 |  |
Assets measured at fair value | 302,206 |  |  |
Fair Value, Measurements, Recurring | Interest Rate Swap | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Interest rate swap agreements | 0 |  |  |
Fair Value, Measurements, Recurring | Interest Rate Swap | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Interest rate swap agreements | 1,790 |  |  |
Fair Value, Measurements, Recurring | Interest Rate Swap | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Interest rate swap agreements | 0 |  |  |
Fair Value, Measurements, Recurring | Interest Rate Swap | Estimate of Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Interest rate swap agreements | 1,790 |  |  |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 280,604 | 195,110 |  |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Fair Value, Measurements, Recurring | Mortgage-backed securities | Estimate of Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 280,604 | 195,110 |  |
Fair Value, Measurements, Recurring | State and political subdivisions | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Fair Value, Measurements, Recurring | State and political subdivisions | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 16,482 | 24,506 |  |
Fair Value, Measurements, Recurring | State and political subdivisions | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Fair Value, Measurements, Recurring | State and political subdivisions | Estimate of Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 16,482 | 24,506 |  |
Fair Value, Measurements, Recurring | Other equity securities | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Fair Value, Measurements, Recurring | Other equity securities | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 3,330 | 3,423 |  |
Fair Value, Measurements, Recurring | Other equity securities | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 0 | 0 |  |
Fair Value, Measurements, Recurring | Other equity securities | Estimate of Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Securities available for sale | 3,330 | 3,423 |  |
Fair Value, Measurements, Nonrecurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other real estate owned | 375 | 1,532 |  |
Impaired loans | 827 | 699 |  |
Assets measured at fair value | 1,202 | 2,231 |  |
Fair Value, Measurements, Nonrecurring | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other real estate owned | 0 | 0 |  |
Impaired loans | 0 | 0 |  |
Assets measured at fair value | 0 | 0 |  |
Fair Value, Measurements, Nonrecurring | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other real estate owned | 375 | 1,532 |  |
Impaired loans | 827 | 699 |  |
Assets measured at fair value | 1,202 | 2,231 |  |
Fair Value, Measurements, Nonrecurring | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Other real estate owned | 0 | 0 |  |
Impaired loans | 0 | 0 |  |
Assets measured at fair value | $ 0 | $ 0 |  |

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