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Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Details) - Troubled Debt Restructurings [Member] $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract | Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract
Troubled debt restructuring categorized by loan classification [Abstract] |  |  |  |
Number of contracts | contract | 2 | 1 | 3 | 4
Pre Modification Outstanding Recorded Investment | $ 517 | $ 501 | $ 554 | $ 2,479
Post Modification Outstanding Recorded Investment, net of related allowance | $ 517 | $ 145 | $ 554 | $ 1,778
Commercial real estate - mortgage |  |  |  |
Troubled debt restructuring categorized by loan classification [Abstract] |  |  |  |
Number of contracts | contract | 0 | 0 | 0 | 0
Pre Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Post Modification Outstanding Recorded Investment, net of related allowance | $ 0 | $ 0 | $ 0 | $ 0
Consumer real estate - mortgage |  |  |  |
Troubled debt restructuring categorized by loan classification [Abstract] |  |  |  |
Number of contracts | contract | 1 | 0 | 2 | 1
Pre Modification Outstanding Recorded Investment | $ 169 | $ 0 | $ 206 | $ 7
Post Modification Outstanding Recorded Investment, net of related allowance | $ 169 | $ 0 | $ 206 | $ 5
Construction and land development |  |  |  |
Troubled debt restructuring categorized by loan classification [Abstract] |  |  |  |
Number of contracts | contract | 1 | 0 | 1 | 0
Pre Modification Outstanding Recorded Investment | $ 348 | $ 0 | $ 348 | $ 0
Post Modification Outstanding Recorded Investment, net of related allowance | $ 348 | $ 0 | $ 348 | $ 0
Commercial and industrial |  |  |  |
Troubled debt restructuring categorized by loan classification [Abstract] |  |  |  |
Number of contracts | contract | 0 | 1 | 0 | 3
Pre Modification Outstanding Recorded Investment | $ 0 | $ 501 | $ 0 | $ 2,472
Post Modification Outstanding Recorded Investment, net of related allowance | $ 0 | $ 145 | $ 0 | $ 1,773
Consumer and other |  |  |  |
Troubled debt restructuring categorized by loan classification [Abstract] |  |  |  |
Number of contracts | contract | 0 | 0 | 0 | 0
Pre Modification Outstanding Recorded Investment | $ 0 | $ 0 | $ 0 | $ 0
Post Modification Outstanding Recorded Investment, net of related allowance | $ 0 | $ 0 | $ 0 | $ 0

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