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Loans and Allowance for Credit Losses - Loan Portfolio by Impairment Methodology (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 767,903 | $ 755,361
Ending balance: individually evaluated for impairment | 5,882 | 5,269
Ending balance: collectively evaluated for impairment | 762,021 | 750,092
Commercial |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 111,698 | 114,161
Ending balance: individually evaluated for impairment | 427 | 487
Ending balance: collectively evaluated for impairment | 111,271 | 113,674
Real estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 568,595 | 550,796
Ending balance: individually evaluated for impairment | 5,248 | 4,238
Ending balance: collectively evaluated for impairment | 563,347 | 546,558
Consumer |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 87,610 | 90,404
Ending balance: individually evaluated for impairment | 207 | 544
Ending balance: collectively evaluated for impairment | $ 87,403 | $ 89,860

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