Loans (Details 7) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	$ 7,457	$ 6,663
Loans Past Due 90 Days or More Still Accruing	949	1,032
Originated Loans
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	4,991	4,572
Loans Past Due 90 Days or More Still Accruing	531	929
Originated Loans | Commercial real estate, Owner occupied | Commercial real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	373	501
Loans Past Due 90 Days or More Still Accruing	0	0
Originated Loans | Commercial real estate, Non-owner occupied | Commercial real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	0	0
Loans Past Due 90 Days or More Still Accruing	0	0
Originated Loans | Commercial real estate, Farmland | Commercial real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	37	45
Loans Past Due 90 Days or More Still Accruing	0	0
Originated Loans | Commercial, Commercial and industrial | Commercial
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	254	249
Loans Past Due 90 Days or More Still Accruing	0	0
Originated Loans | Commercial, Agricultural | Commercial
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	0	2
Loans Past Due 90 Days or More Still Accruing	8	0
Originated Loans | Residential real estate, 1-4 family residential | Residential real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	3,332	2,653
Loans Past Due 90 Days or More Still Accruing	83	393
Originated Loans | Residential real estate, Home equity lines of credit | Residential real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	627	602
Loans Past Due 90 Days or More Still Accruing	170	8
Originated Loans | Consumer, Indirect | Consumer
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	332	457
Loans Past Due 90 Days or More Still Accruing	109	361
Originated Loans | Consumer, Direct | Consumer
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	36	63
Loans Past Due 90 Days or More Still Accruing	147	153
Originated Loans | Consumer, Other | Consumer
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	0	0
Loans Past Due 90 Days or More Still Accruing	14	14
Acquired Loans
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	2,466	2,091
Loans Past Due 90 Days or More Still Accruing	418	103
Acquired Loans | Commercial real estate, Owner occupied | Commercial real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	0	0
Loans Past Due 90 Days or More Still Accruing	0	0
Acquired Loans | Commercial real estate, Non-owner occupied | Commercial real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	88	216
Loans Past Due 90 Days or More Still Accruing	0	0
Acquired Loans | Commercial real estate, Farmland | Commercial real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	257	0
Loans Past Due 90 Days or More Still Accruing	251	0
Acquired Loans | Commercial, Commercial and industrial | Commercial
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	865	943
Loans Past Due 90 Days or More Still Accruing	0	19
Acquired Loans | Commercial, Agricultural | Commercial
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	0	9
Loans Past Due 90 Days or More Still Accruing	0	0
Acquired Loans | Residential real estate, 1-4 family residential | Residential real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	933	613
Loans Past Due 90 Days or More Still Accruing	60	69
Acquired Loans | Residential real estate, Home equity lines of credit | Residential real estate
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	181	170
Loans Past Due 90 Days or More Still Accruing	83	0
Acquired Loans | Consumer, Direct | Consumer
Schedule of investment in nonaccrual and loans past due over 90 days still on accrual by class of loans
Nonaccrual	142	140
Loans Past Due 90 Days or More Still Accruing	$ 24	$ 15