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Loans, Troubled Debt Restructurings Segregated by Class (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) Loan | Dec. 31, 2016 USD ($) Loan
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | Loan | 43 | 43
Post-Modification Outstanding Balance | $ 5,547 | $ 16,152
Commitment to extend additional credit on loans modified in TDRs | $ 200 |
Defaulted restructured loans, number of loans | Loan | 1 | 2
Defaulted restructured loans, recorded balance | $ 846 | $ 79
Term Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 5,105 | 15,203
Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 0
Combination [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | $ 442 | $ 949
Commercial [Member] | Construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | Loan | 2 | 1
Post-Modification Outstanding Balance | $ 114 | $ 1,288
Commercial [Member] | Construction [Member] | Term Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 1,288
Commercial [Member] | Construction [Member] | Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 0
Commercial [Member] | Construction [Member] | Combination [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | $ 114 | $ 0
Commercial [Member] | Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | Loan | 15 | 27
Post-Modification Outstanding Balance | $ 2,391 | $ 9,408
Defaulted restructured loans, number of loans | Loan | 0 | 1
Defaulted restructured loans, recorded balance | $ 0 | $ 67
Commercial [Member] | Real Estate [Member] | Term Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 2,199 | 8,827
Commercial [Member] | Real Estate [Member] | Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 0
Commercial [Member] | Real Estate [Member] | Combination [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | $ 192 | $ 581
Commercial [Member] | Other [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | Loan | 22 | 14
Post-Modification Outstanding Balance | $ 1,208 | $ 5,175
Defaulted restructured loans, number of loans | Loan | 0 | 1
Defaulted restructured loans, recorded balance | $ 0 | $ 12
Commercial [Member] | Other [Member] | Term Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 1,072 | 5,088
Commercial [Member] | Other [Member] | Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 0
Commercial [Member] | Other [Member] | Combination [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | $ 136 | $ 87
Residential [Member] | Construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | Loan | 1 | 0
Post-Modification Outstanding Balance | $ 846 | $ 0
Defaulted restructured loans, number of loans | Loan | 1 | 0
Defaulted restructured loans, recorded balance | $ 846 | $ 0
Residential [Member] | Construction [Member] | Term Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 846 | 0
Residential [Member] | Construction [Member] | Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 0
Residential [Member] | Construction [Member] | Combination [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | $ 0 | $ 0
Residential [Member] | Real Estate [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Loans | Loan | 3 | 1
Post-Modification Outstanding Balance | $ 988 | $ 281
Defaulted restructured loans, number of loans | Loan | 0 | 0
Defaulted restructured loans, recorded balance | $ 0 | $ 0
Residential [Member] | Real Estate [Member] | Term Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 988 | 0
Residential [Member] | Real Estate [Member] | Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | 0 | 0
Residential [Member] | Real Estate [Member] | Combination [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Post-Modification Outstanding Balance | $ 0 | $ 281

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