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Loans - Impaired Loans (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract | Sep. 30, 2018 USD ($) contract | Sep. 30, 2017 USD ($) contract | Dec. 31, 2017 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired Financing Receivable, Recorded Investment | $ 10,118 |  | $ 10,118 |  | $ 5,205
Impaired Financing Receivable, Unpaid Principal Balance | 10,167 |  | 10,167 |  | 5,263
Impaired Financing Receivable, Related Allowance | 0 |  | 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 9,221 | $ 5,728 | 6,937 | $ 3,944 |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | 637 | 80 | 806 | 80 |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 0 | 50 | 0 | 46 |
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | 0 | 0 | 0 | 0 |
Impaired Financing Receivable, Average Recorded Investment | 9,221 | 5,778 | 6,937 | 3,990 |
Impaired Financing Receivable, Interest Income, Accrual Method | 637 | 80 | 806 | 80 |
Other real estate owned | 5,041 |  | 5,041 |  | 5,041
Mortgage loans in process of foreclosure, amount | 0 |  | 0 |  | 200
Commercial and industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 7,949 |  | 7,949 |  | 3,886
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 7,949 |  | 7,949 |  | 3,886
Impaired Financing Receivable Loans With No Specific Related Allowance | 0 |  | 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 7,233 | 3,941 | 5,430 | 2,157 |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | 561 | 71 | 723 | 71 |
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment | 0 | 50 | 0 | 46 |
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method | $ 0 | $ 0 | $ 0 | $ 0 |
Number of contracts classified as TDRs | contract | 0 | 2 | 0 | 2 |
Pre-modification recorded investment | $ 1,800 |  | $ 1,800 |  |
Post-modification recorded investment | 1,800 |  | 1,800 |  |
Owner-occupied commercial real estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,479 |  | 1,479 |  | 7
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 1,479 |  | 1,479 |  | 7
Impaired Financing Receivable Loans With No Specific Related Allowance | 0 |  | 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 1,249 | $ 4 | 553 | $ 1 |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | 75 | 0 | 82 | 0 |
Residential mortgage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 579 |  | 579 |  | 1,139
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 579 |  | 579 |  | 1,144
Impaired Financing Receivable Loans With No Specific Related Allowance | 0 |  | 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 573 | 1,690 | 768 | 1,673 |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | 0 | 7 | 0 | 7 |
Other real estate owned | 600 |  | 600 |  | 600
Home equity |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 0 |  | 0 |  | 83
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 0 |  | 0 |  | 83
Impaired Financing Receivable Loans With No Specific Related Allowance | 0 |  | 0 |  | 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 62 | 0 | 76 | 0 |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | 0 | 0 | 0 | 0 |
Other consumer |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 111 |  | 111 |  | 90
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance | 160 |  | 160 |  | 143
Impaired Financing Receivable Loans With No Specific Related Allowance | 0 |  | 0 |  | $ 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment | 104 | 93 | 110 | 113 |
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method | $ 1 | $ 2 | $ 1 | $ 2 |

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