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Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2017
Related Party Transactions [Abstract] |
Loans to Principal Officers, Directors, and Their Affiliates | Loans to principal officers, directors, and their affiliates during 2017 were as follows:
Beginning balance |  | $ | 1,096 |
New loans |  |  | 15 |
Effect of changes in composition of related parties |  |  | 19,703 |
Repayments |  |  | (293 | )
Ending balance |  | $ | 20,521 |

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