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Loans (Details 5) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable Impaired [Line Items] |  |
Unpaid Principal Balance, With no related allowance recorded | $ 4,085 | $ 4,282
Unpaid Principal Balance, With an allowance recorded | 1,710 | 1,636
Unpaid Principal Balance | 5,795 | 5,918
Recorded Investment, With no related allowance recorded | 3,738 | 3,925
Recorded Investment, With an allowance recorded | 1,672 | 1,611
Recorded Investment | 5,410 | 5,536
Allowance for Loan Losses Allocated | 210 | 162
Consumer |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Principal Balance, With no related allowance recorded | 159 | 145
Unpaid Principal Balance, With an allowance recorded | 2 |
Recorded Investment, With no related allowance recorded | 63 | 59
Recorded Investment, With an allowance recorded | 2 |
Allowance for Loan Losses Allocated | 1 |
Commercial real estate, Owner occupied | Commercial real estate |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Principal Balance, With no related allowance recorded | 536 | 659
Recorded Investment, With no related allowance recorded | 537 | 658
Commercial, Commercial and industrial | Commercial |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Principal Balance, With no related allowance recorded | 210 | 214
Unpaid Principal Balance, With an allowance recorded | 66 | 68
Recorded Investment, With no related allowance recorded | 189 | 192
Recorded Investment, With an allowance recorded | 66 | 68
Allowance for Loan Losses Allocated | 3 | 4
Residential real estate, 1-4 family residential | Residential real estate |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Principal Balance, With no related allowance recorded | 2,849 | 2,923
Unpaid Principal Balance, With an allowance recorded | 1,473 | 1,409
Recorded Investment, With no related allowance recorded | 2,630 | 2,697
Recorded Investment, With an allowance recorded | 1,447 | 1,387
Allowance for Loan Losses Allocated | 131 | 84
Residential real estate, Home equity lines of credit | Residential real estate |  |
Financing Receivable Impaired [Line Items] |  |
Unpaid Principal Balance, With no related allowance recorded | 331 | 341
Unpaid Principal Balance, With an allowance recorded | 169 | 159
Recorded Investment, With no related allowance recorded | 319 | 319
Recorded Investment, With an allowance recorded | 157 | 156
Allowance for Loan Losses Allocated | $ 75 | $ 74

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