Loans (Details 7) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of investment in past due loans
Total Past Due	$ 17,886	$ 20,916
Loans Not Past Due	1,559,495	1,406,719
Loans	1,577,381	1,427,635
Commercial real estate
Schedule of investment in past due loans
Loans	630,700	534,285
Commercial
Schedule of investment in past due loans
Loans	264,861	245,055
Residential real estate
Schedule of investment in past due loans
Loans	468,884	430,195
Consumer
Schedule of investment in past due loans
Loans	212,936	218,100
Financing Receivables, 30 to 59 Days Past Due
Schedule of investment in past due loans
Total Past Due	8,012	10,485
Financing Receivables, 60 to 89 Days Past Due
Schedule of investment in past due loans
Total Past Due	2,179	2,261
Financing Receivables, Equal to Greater than 90 Days Past Due
Schedule of investment in past due loans
Total Past Due	7,695	8,170
Residential real estate, 1-4 family residential \| Residential real estate
Schedule of investment in past due loans
Loans	368,592	335,718
Residential real estate, Home equity lines of credit \| Residential real estate
Schedule of investment in past due loans
Loans	100,292	94,477
Consumer, Indirect \| Consumer
Schedule of investment in past due loans
Loans	160,848	161,713
Consumer, Direct \| Consumer
Schedule of investment in past due loans
Loans	43,084	48,528
Consumer, Other \| Consumer
Schedule of investment in past due loans
Loans	9,004	7,859
Originated Loans
Schedule of investment in past due loans
Total Past Due	13,100	13,715
Loans Not Past Due	1,251,918	1,040,781
Loans	1,265,018	1,054,496
Originated Loans \| Financing Receivables, 30 to 59 Days Past Due
Schedule of investment in past due loans
Total Past Due	5,745	7,215
Originated Loans \| Financing Receivables, 60 to 89 Days Past Due
Schedule of investment in past due loans
Total Past Due	1,854	1,359
Originated Loans \| Financing Receivables, Equal to Greater than 90 Days Past Due
Schedule of investment in past due loans
Total Past Due	5,501	5,141
Originated Loans \| Commercial real estate, Owner occupied \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	845	958
Loans Not Past Due	139,081	108,475
Loans	139,926	109,433
Originated Loans \| Commercial real estate, Owner occupied \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	4	0
Originated Loans \| Commercial real estate, Owner occupied \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	340	0
Originated Loans \| Commercial real estate, Owner occupied \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	501	958
Originated Loans \| Commercial real estate, Non-owner occupied \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	343
Loans Not Past Due	198,588	165,105
Loans	198,588	165,448
Originated Loans \| Commercial real estate, Non-owner occupied \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial real estate, Non-owner occupied \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial real estate, Non-owner occupied \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	343
Originated Loans \| Commercial real estate, Farmland \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	45	58
Loans Not Past Due	70,398	34,057
Loans	70,443	34,115
Originated Loans \| Commercial real estate, Farmland \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial real estate, Farmland \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial real estate, Farmland \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	45	58
Originated Loans \| Commercial real estate, Other \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Loans Not Past Due	88,703	70,542
Loans	88,703	70,542
Originated Loans \| Commercial real estate, Other \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial real estate, Other \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial real estate, Other \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Originated Loans \| Commercial, Commercial and industrial \| Commercial
Schedule of investment in past due loans
Total Past Due	544	490
Loans Not Past Due	192,335	170,242
Loans	192,879	170,732
Originated Loans \| Commercial, Commercial and industrial \| Financing Receivables, 30 to 59 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	292	90
Originated Loans \| Commercial, Commercial and industrial \| Financing Receivables, 60 to 89 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	3	0
Originated Loans \| Commercial, Commercial and industrial \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	249	400
Originated Loans \| Residential real estate, 1-4 family residential \| Residential real estate
Schedule of investment in past due loans
Total Past Due	5,493	5,948
Loans Not Past Due	266,338	217,752
Loans	271,831	223,700
Originated Loans \| Residential real estate, 1-4 family residential \| Financing Receivables, 30 to 59 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	2,044	3,368
Originated Loans \| Residential real estate, 1-4 family residential \| Financing Receivables, 60 to 89 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	403	356
Originated Loans \| Residential real estate, 1-4 family residential \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	3,046	2,224
Originated Loans \| Commercial, Agricultural \| Commercial
Schedule of investment in past due loans
Total Past Due	76	41
Loans Not Past Due	32,605	24,632
Loans	32,681	24,673
Originated Loans \| Commercial, Agricultural \| Financing Receivables, 30 to 59 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	74	0
Originated Loans \| Commercial, Agricultural \| Financing Receivables, 60 to 89 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	0	29
Originated Loans \| Commercial, Agricultural \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	2	12
Originated Loans \| Residential real estate, Home equity lines of credit \| Residential real estate
Schedule of investment in past due loans
Total Past Due	783	434
Loans Not Past Due	70,754	59,248
Loans	71,537	59,682
Originated Loans \| Residential real estate, Home equity lines of credit \| Financing Receivables, 30 to 59 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	155	77
Originated Loans \| Residential real estate, Home equity lines of credit \| Financing Receivables, 60 to 89 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	18	37
Originated Loans \| Residential real estate, Home equity lines of credit \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	610	320
Originated Loans \| Consumer, Indirect \| Consumer
Schedule of investment in past due loans
Total Past Due	4,076	4,276
Loans Not Past Due	156,772	157,437
Loans	160,848	161,713
Originated Loans \| Consumer, Indirect \| Financing Receivables, 30 to 59 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	2,429	2,844
Originated Loans \| Consumer, Indirect \| Financing Receivables, 60 to 89 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	829	696
Originated Loans \| Consumer, Indirect \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	818	736
Originated Loans \| Consumer, Direct \| Consumer
Schedule of investment in past due loans
Total Past Due	1,098	1,031
Loans Not Past Due	27,608	25,815
Loans	28,706	26,846
Originated Loans \| Consumer, Direct \| Financing Receivables, 30 to 59 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	632	744
Originated Loans \| Consumer, Direct \| Financing Receivables, 60 to 89 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	250	213
Originated Loans \| Consumer, Direct \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	216	74
Originated Loans \| Consumer, Other \| Consumer
Schedule of investment in past due loans
Total Past Due	140	136
Loans Not Past Due	8,736	7,476
Loans	8,876	7,612
Originated Loans \| Consumer, Other \| Financing Receivables, 30 to 59 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	115	92
Originated Loans \| Consumer, Other \| Financing Receivables, 60 to 89 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	11	28
Originated Loans \| Consumer, Other \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	14	16
Acquired Loans
Schedule of investment in past due loans
Total Past Due	4,786	7,201
Loans Not Past Due	307,577	365,938
Loans	312,363	373,139
Acquired Loans \| Financing Receivables, 30 to 59 Days Past Due
Schedule of investment in past due loans
Total Past Due	2,267	3,270
Acquired Loans \| Financing Receivables, 60 to 89 Days Past Due
Schedule of investment in past due loans
Total Past Due	325	902
Acquired Loans \| Financing Receivables, Equal to Greater than 90 Days Past Due
Schedule of investment in past due loans
Total Past Due	2,194	3,029
Acquired Loans \| Commercial real estate, Owner occupied \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	298
Loans Not Past Due	53,051	60,630
Loans	53,051	60,928
Acquired Loans \| Commercial real estate, Owner occupied \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	8
Acquired Loans \| Commercial real estate, Owner occupied \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	205
Acquired Loans \| Commercial real estate, Owner occupied \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	85
Acquired Loans \| Commercial real estate, Non-owner occupied \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	216	134
Loans Not Past Due	20,042	24,815
Loans	20,258	24,949
Acquired Loans \| Commercial real estate, Non-owner occupied \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	134
Acquired Loans \| Commercial real estate, Non-owner occupied \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Acquired Loans \| Commercial real estate, Non-owner occupied \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	216	0
Acquired Loans \| Commercial real estate, Farmland \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	454	463
Loans Not Past Due	47,301	53,741
Loans	47,755	54,204
Acquired Loans \| Commercial real estate, Farmland \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	454	83
Acquired Loans \| Commercial real estate, Farmland \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Acquired Loans \| Commercial real estate, Farmland \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	380
Acquired Loans \| Commercial real estate, Other \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	24
Loans Not Past Due	11,976	14,642
Loans	11,976	14,666
Acquired Loans \| Commercial real estate, Other \| Financing Receivables, 30 to 59 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Acquired Loans \| Commercial real estate, Other \| Financing Receivables, 60 to 89 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	0
Acquired Loans \| Commercial real estate, Other \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial real estate
Schedule of investment in past due loans
Total Past Due	0	24
Acquired Loans \| Commercial, Commercial and industrial \| Commercial
Schedule of investment in past due loans
Total Past Due	1,385	1,239
Loans Not Past Due	25,709	32,387
Loans	27,094	33,626
Acquired Loans \| Commercial, Commercial and industrial \| Financing Receivables, 30 to 59 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	327	278
Acquired Loans \| Commercial, Commercial and industrial \| Financing Receivables, 60 to 89 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	96	0
Acquired Loans \| Commercial, Commercial and industrial \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	962	961
Acquired Loans \| Residential real estate, 1-4 family residential \| Residential real estate
Schedule of investment in past due loans
Total Past Due	1,617	2,991
Loans Not Past Due	95,144	109,027
Loans	96,761	112,018
Acquired Loans \| Residential real estate, 1-4 family residential \| Financing Receivables, 30 to 59 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	858	1,556
Acquired Loans \| Residential real estate, 1-4 family residential \| Financing Receivables, 60 to 89 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	77	504
Acquired Loans \| Residential real estate, 1-4 family residential \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	682	931
Acquired Loans \| Commercial, Agricultural \| Commercial
Schedule of investment in past due loans
Total Past Due	96	257
Loans Not Past Due	12,111	15,767
Loans	12,207	16,024
Acquired Loans \| Commercial, Agricultural \| Financing Receivables, 30 to 59 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	87	21
Acquired Loans \| Commercial, Agricultural \| Financing Receivables, 60 to 89 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	0	0
Acquired Loans \| Commercial, Agricultural \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Commercial
Schedule of investment in past due loans
Total Past Due	9	236
Acquired Loans \| Residential real estate, Home equity lines of credit \| Residential real estate
Schedule of investment in past due loans
Total Past Due	331	389
Loans Not Past Due	28,424	34,406
Loans	28,755	34,795
Acquired Loans \| Residential real estate, Home equity lines of credit \| Financing Receivables, 30 to 59 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	161	152
Acquired Loans \| Residential real estate, Home equity lines of credit \| Financing Receivables, 60 to 89 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	0	9
Acquired Loans \| Residential real estate, Home equity lines of credit \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential real estate
Schedule of investment in past due loans
Total Past Due	170	228
Acquired Loans \| Consumer, Indirect \| Consumer
Schedule of investment in past due loans
Loans	0	0
Acquired Loans \| Consumer, Direct \| Consumer
Schedule of investment in past due loans
Total Past Due	686	1,306
Loans Not Past Due	13,692	20,376
Loans	14,378	21,682
Acquired Loans \| Consumer, Direct \| Financing Receivables, 30 to 59 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	380	938
Acquired Loans \| Consumer, Direct \| Financing Receivables, 60 to 89 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	151	184
Acquired Loans \| Consumer, Direct \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	155	184
Acquired Loans \| Consumer, Other \| Consumer
Schedule of investment in past due loans
Total Past Due	1	100
Loans Not Past Due	127	147
Loans	128	247
Acquired Loans \| Consumer, Other \| Financing Receivables, 30 to 59 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	0	100
Acquired Loans \| Consumer, Other \| Financing Receivables, 60 to 89 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	1	0
Acquired Loans \| Consumer, Other \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Consumer
Schedule of investment in past due loans
Total Past Due	$ 0	$ 0

Loans (Details 7) - USD ($)
$ in Thousands

Dec. 31, 2017

Dec. 31, 2016

Schedule of investment in past due loans

Total Past Due

$ 17,886

$ 20,916

Loans Not Past Due

1,559,495

1,406,719

Loans

1,577,381