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Loans (Details 10) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable Recorded Investment [Line Items] |  |
Loans | $ 1,577,381 | $ 1,427,635
Residential real estate |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 468,884 | 430,195
Residential real estate | Residential real estate, 1-4 family residential |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 368,592 | 335,718
Residential real estate | Residential real estate, Home equity lines of credit |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 100,292 | 94,477
Consumer |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 212,936 | 218,100
Consumer | Consumer, Indirect |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 160,848 | 161,713
Consumer | Consumer, Direct |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 43,084 | 48,528
Consumer | Consumer, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 9,004 | 7,859
Originated Loans |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 1,265,018 | 1,054,496
Originated Loans | Residential real estate | Residential real estate, 1-4 family residential |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 271,831 | 223,700
Originated Loans | Residential real estate | Residential real estate, 1-4 family residential | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 268,785 | 221,476
Originated Loans | Residential real estate | Residential real estate, 1-4 family residential | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 3,046 | 2,224
Originated Loans | Residential real estate | Residential real estate, Home equity lines of credit |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 71,537 | 59,682
Originated Loans | Residential real estate | Residential real estate, Home equity lines of credit | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 70,927 | 59,362
Originated Loans | Residential real estate | Residential real estate, Home equity lines of credit | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 610 | 320
Originated Loans | Consumer | Consumer, Indirect |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 160,848 | 161,713
Originated Loans | Consumer | Consumer, Indirect | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 160,030 | 160,977
Originated Loans | Consumer | Consumer, Indirect | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 818 | 736
Originated Loans | Consumer | Consumer, Direct |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 28,706 | 26,846
Originated Loans | Consumer | Consumer, Direct | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 28,490 | 26,772
Originated Loans | Consumer | Consumer, Direct | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 216 | 74
Originated Loans | Consumer | Consumer, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 8,876 | 7,612
Originated Loans | Consumer | Consumer, Other | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 8,862 | 7,596
Originated Loans | Consumer | Consumer, Other | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 14 | 16
Acquired Loans |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 312,363 | 373,139
Acquired Loans | Residential real estate | Residential real estate, 1-4 family residential |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 96,761 | 112,018
Acquired Loans | Residential real estate | Residential real estate, 1-4 family residential | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 96,079 | 111,087
Acquired Loans | Residential real estate | Residential real estate, 1-4 family residential | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 682 | 931
Acquired Loans | Residential real estate | Residential real estate, Home equity lines of credit |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 28,755 | 34,795
Acquired Loans | Residential real estate | Residential real estate, Home equity lines of credit | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 28,585 | 34,567
Acquired Loans | Residential real estate | Residential real estate, Home equity lines of credit | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 170 | 228
Acquired Loans | Consumer | Consumer, Indirect |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 0 | 0
Acquired Loans | Consumer | Consumer, Indirect | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 0 | 0
Acquired Loans | Consumer | Consumer, Indirect | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 0 | 0
Acquired Loans | Consumer | Consumer, Direct |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 14,378 | 21,682
Acquired Loans | Consumer | Consumer, Direct | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 14,223 | 21,498
Acquired Loans | Consumer | Consumer, Direct | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 155 | 184
Acquired Loans | Consumer | Consumer, Other |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 128 | 247
Acquired Loans | Consumer | Consumer, Other | Performing Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | 128 | 247
Acquired Loans | Consumer | Consumer, Other | Nonperforming Financing Receivable |  |
Financing Receivable Recorded Investment [Line Items] |  |
Loans | $ 0 | $ 0

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