Loans (Details 8) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) Loan	Dec. 31, 2016 USD ($) Loan	Dec. 31, 2015 USD ($) Loan
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	61	51
Pre-Modification Outstanding Recorded Investment	$ 1,515	$ 881
Post-Modification Outstanding Recorded Investment	$ 1,522	$ 882
Originated Loans
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	54	44	31
Pre-Modification Outstanding Recorded Investment	$ 1,305	$ 670	$ 1,741
Post-Modification Outstanding Recorded Investment	$ 1,312	$ 671	$ 1,741
Originated Loans \| Residential real estate, 1-4 family residential
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	15	15	13
Pre-Modification Outstanding Recorded Investment	$ 910	$ 436	$ 760
Post-Modification Outstanding Recorded Investment	$ 917	$ 437	$ 760
Originated Loans \| Residential real estate, Home equity lines of credit
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	10	1	2
Pre-Modification Outstanding Recorded Investment	$ 234	$ 40	$ 60
Post-Modification Outstanding Recorded Investment	$ 234	$ 40	$ 60
Originated Loans \| Consumer, Indirect
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	29	26	12
Pre-Modification Outstanding Recorded Investment	$ 161	$ 182	$ 104
Post-Modification Outstanding Recorded Investment	$ 161	$ 182	$ 104
Originated Loans \| Commercial real estate, Owner occupied
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan			2
Pre-Modification Outstanding Recorded Investment			$ 801
Post-Modification Outstanding Recorded Investment			$ 801
Originated Loans \| Consumer
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan		2	1
Pre-Modification Outstanding Recorded Investment		$ 12	$ 8
Post-Modification Outstanding Recorded Investment		$ 12	$ 8
Originated Loans \| Commercial \| Commercial and industrial
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan			1
Pre-Modification Outstanding Recorded Investment			$ 8
Post-Modification Outstanding Recorded Investment			$ 8
Acquired Loans
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	7	7	33
Pre-Modification Outstanding Recorded Investment	$ 210	$ 211	$ 2,698
Post-Modification Outstanding Recorded Investment	$ 210	$ 211	$ 2,698
Acquired Loans \| Residential real estate, 1-4 family residential
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	3	4
Pre-Modification Outstanding Recorded Investment	$ 85	$ 153
Post-Modification Outstanding Recorded Investment	$ 85	$ 153
Acquired Loans \| Residential real estate, Home equity lines of credit
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	1	1
Pre-Modification Outstanding Recorded Investment	$ 57	$ 18
Post-Modification Outstanding Recorded Investment	$ 57	$ 18
Acquired Loans \| Consumer
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	2	2
Pre-Modification Outstanding Recorded Investment	$ 55	$ 40
Post-Modification Outstanding Recorded Investment	$ 55	$ 40
Acquired Loans \| Commercial \| Commercial and industrial
Financing Receivable Modifications [Line Items]
Number of Loans \| Loan	1		2
Pre-Modification Outstanding Recorded Investment	$ 13		$ 957
Post-Modification Outstanding Recorded Investment	$ 13		$ 957

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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