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Loans and Allowance for Loan Losses - Troubled Debt Restructuring (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 USD ($) contract | Dec. 31, 2016 USD ($) contract
Consumer Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 1 |
Pre-Modification Outstanding Recorded Investment | $ 138 |
Post-Modification Outstanding Recorded Investment | $ 138 |
Construction and Land Development [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  | 1
Pre-Modification Outstanding Recorded Investment |  | $ 278
Post-Modification Outstanding Recorded Investment |  | $ 278
Commercial and Industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract |  | 1
Pre-Modification Outstanding Recorded Investment |  | $ 164
Post-Modification Outstanding Recorded Investment |  | $ 164

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