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Loans (Details 8) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Loan	Dec. 31, 2015 USD ($) Loan	Dec. 31, 2014 USD ($) Loan
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	51	33	32
Pre-Modification Outstanding Recorded Investment	$ 881	$ 2,698	$ 1,929
Post-Modification Outstanding Recorded Investment	$ 882	$ 2,698	$ 1,959
Residential real estate, 1-4 family residential
Financing Receivable Modifications [Line Items]
Number of Loans | Loan			21
Pre-Modification Outstanding Recorded Investment			$ 1,042
Post-Modification Outstanding Recorded Investment			$ 1,059
Residential real estate, Home equity lines of credit
Financing Receivable Modifications [Line Items]
Number of Loans | Loan			5
Pre-Modification Outstanding Recorded Investment			$ 128
Post-Modification Outstanding Recorded Investment			$ 128
Consumer, Indirect
Financing Receivable Modifications [Line Items]
Number of Loans | Loan			2
Pre-Modification Outstanding Recorded Investment			$ 37
Post-Modification Outstanding Recorded Investment			$ 37
Commercial real estate, Owner occupied
Financing Receivable Modifications [Line Items]
Number of Loans | Loan			1
Pre-Modification Outstanding Recorded Investment			$ 303
Post-Modification Outstanding Recorded Investment			$ 316
Commercial real estate, Non-owner occupied
Financing Receivable Modifications [Line Items]
Number of Loans | Loan			2
Pre-Modification Outstanding Recorded Investment			$ 408
Post-Modification Outstanding Recorded Investment			$ 408
Consumer
Financing Receivable Modifications [Line Items]
Number of Loans | Loan			1
Pre-Modification Outstanding Recorded Investment			$ 11
Post-Modification Outstanding Recorded Investment			$ 11
Originated Loans
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	44	31
Pre-Modification Outstanding Recorded Investment	$ 670	$ 1,741
Post-Modification Outstanding Recorded Investment	$ 671	$ 1,741
Originated Loans | Residential real estate, 1-4 family residential
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	15	13
Pre-Modification Outstanding Recorded Investment	$ 436	$ 760
Post-Modification Outstanding Recorded Investment	$ 437	$ 760
Originated Loans | Residential real estate, Home equity lines of credit
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	1	2
Pre-Modification Outstanding Recorded Investment	$ 40	$ 60
Post-Modification Outstanding Recorded Investment	$ 40	$ 60
Originated Loans | Consumer, Indirect
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	26	12
Pre-Modification Outstanding Recorded Investment	$ 182	$ 104
Post-Modification Outstanding Recorded Investment	$ 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
Pre-Modification Outstanding Recorded Investment	$ 211
Post-Modification Outstanding Recorded Investment	$ 211
Acquired Loans | Residential real estate, 1-4 family residential
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	4
Pre-Modification Outstanding Recorded Investment	$ 153
Post-Modification Outstanding Recorded Investment	$ 153
Acquired Loans | Residential real estate, Home equity lines of credit
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	1
Pre-Modification Outstanding Recorded Investment	$ 18
Post-Modification Outstanding Recorded Investment	$ 18
Acquired Loans | Consumer
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	2
Pre-Modification Outstanding Recorded Investment	$ 40
Post-Modification Outstanding Recorded Investment	$ 40
Acquired Loans | Commercial | Commercial and industrial
Financing Receivable Modifications [Line Items]
Number of Loans | Loan		2
Pre-Modification Outstanding Recorded Investment		$ 957
Post-Modification Outstanding Recorded Investment		$ 957

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