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Loans and Allowance for Credit Losses - Loan Portfolio by Impairment Methodology (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 917,103 | $ 899,320
Ending balance: individually evaluated for impairment | 5,909 | 6,366
Ending balance: collectively evaluated for impairment | 911,194 | 892,954
Commercial |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 109,531 | 115,812
Ending balance: individually evaluated for impairment | 348 | 377
Ending balance: collectively evaluated for impairment | 109,183 | 115,435
Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 699,576 | 677,467
Ending balance: individually evaluated for impairment | 4,215 | 4,846
Ending balance: collectively evaluated for impairment | 695,361 | 672,621
Consumer |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 107,996 | 106,041
Ending balance: individually evaluated for impairment | 1,346 | 1,143
Ending balance: collectively evaluated for impairment | $ 106,650 | $ 104,898

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