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Loans and Allowance for Credit Losses - Loan Portfolio by Impairment Methodology (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | $ 599,033 | $ 572,442
Ending balance: individually evaluated for impairment | 6,847 | 18,826
Ending balance: collectively evaluated for impairment | 592,186 | 553,616
Commercial |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 146,111 | 128,147
Ending balance: individually evaluated for impairment | 55 | 7,268
Ending balance: collectively evaluated for impairment | 146,056 | 120,879
Real estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 401,735 | 386,627
Ending balance: individually evaluated for impairment | 5,294 | 8,512
Ending balance: collectively evaluated for impairment | 396,441 | 378,115
Consumer |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Loans | 51,187 | 57,668
Ending balance: individually evaluated for impairment | 1,498 | 3,046
Ending balance: collectively evaluated for impairment | $ 49,689 | $ 54,622

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