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Fair Value (Financial instruments Measured at Fair Value) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017
--- | --- | --- | ---
Securities available for sale: |  |  |
Total available for sale securities | $ 353,068 | $ 343,270 | $ 198,924
Impaired loans and foreclosed real estate: |  |  |
Foreclosed real estate | 6,140 | 12,571 | $ 9,356
Fair Value [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Securities available for sale: |  |  |
Total available for sale securities | 353,068 | 343,270 |
Recurring [Member] | Quoted Prices in Markets for Identical Assets (Level 1) [Member] |  |  |
Securities available for sale: |  |  |
Government-sponsored enterprise securities |  |  |
Mortgage-backed securities |  |  |
Corporate bonds |  |  |
Total available for sale securities |  |  |
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Securities available for sale: |  |  |
Government-sponsored enterprise securities | 43,422 | 13,867 |
Mortgage-backed securities | 276,474 | 295,213 |
Corporate bonds | 33,172 | 34,190 |
Total available for sale securities | 353,068 | 343,270 |
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Securities available for sale: |  |  |
Government-sponsored enterprise securities |  |  |
Mortgage-backed securities |  |  |
Corporate bonds |  |  |
Total available for sale securities |  |  |
Recurring [Member] | Fair Value [Member] |  |  |
Securities available for sale: |  |  |
Government-sponsored enterprise securities | 43,422 | 13,867 |
Mortgage-backed securities | 276,474 | 295,213 |
Corporate bonds | 33,172 | 34,190 |
Total available for sale securities | 353,068 | 343,270 |
Nonrecurring [Member] | Quoted Prices in Markets for Identical Assets (Level 1) [Member] |  |  |
Impaired loans and foreclosed real estate: |  |  |
Impaired loans |  |  |
Foreclosed real estate |  |  |
Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Impaired loans and foreclosed real estate: |  |  |
Impaired loans |  |  |
Foreclosed real estate |  |  |
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Impaired loans and foreclosed real estate: |  |  |
Impaired loans | 13,820 | 14,086 |
Foreclosed real estate | 6,140 | 12,571 |
Nonrecurring [Member] | Fair Value [Member] |  |  |
Impaired loans and foreclosed real estate: |  |  |
Impaired loans | 13,820 | 14,086 |
Foreclosed real estate | $ 6,140 | $ 12,571 |

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