Credit Quality Indicators (Details 1) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,639,191	$ 1,577,381
Originated Loans
Financing Receivable Recorded Investment [Line Items]
Loans	1,356,669	1,265,018
Acquired Loans
Financing Receivable Recorded Investment [Line Items]
Loans	282,522	312,363
Residential real estate
Financing Receivable Recorded Investment [Line Items]
Loans	478,827	468,884
Residential real estate | Residential real estate, 1-4 family residential
Financing Receivable Recorded Investment [Line Items]
Loans	377,315	368,592
Residential real estate | Residential real estate, 1-4 family residential | Originated Loans
Financing Receivable Recorded Investment [Line Items]
Loans	289,748	271,831
Residential real estate | Residential real estate, 1-4 family residential | Originated Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	286,333	268,785
Residential real estate | Residential real estate, 1-4 family residential | Originated Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	3,415	3,046
Residential real estate | Residential real estate, 1-4 family residential | Acquired Loans
Financing Receivable Recorded Investment [Line Items]
Loans	87,567	96,761
Residential real estate | Residential real estate, 1-4 family residential | Acquired Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	86,574	96,079
Residential real estate | Residential real estate, 1-4 family residential | Acquired Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	993	682
Residential real estate | Residential real estate, Home equity lines of credit
Financing Receivable Recorded Investment [Line Items]
Loans	101,512	100,292
Residential real estate | Residential real estate, Home equity lines of credit | Originated Loans
Financing Receivable Recorded Investment [Line Items]
Loans	74,977	71,537
Residential real estate | Residential real estate, Home equity lines of credit | Originated Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	74,180	70,927
Residential real estate | Residential real estate, Home equity lines of credit | Originated Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	797	610
Residential real estate | Residential real estate, Home equity lines of credit | Acquired Loans
Financing Receivable Recorded Investment [Line Items]
Loans	26,535	28,755
Residential real estate | Residential real estate, Home equity lines of credit | Acquired Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	26,271	28,585
Residential real estate | Residential real estate, Home equity lines of credit | Acquired Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	264	170
Consumer
Financing Receivable Recorded Investment [Line Items]
Loans	224,766	212,936
Consumer | Consumer, Indirect
Financing Receivable Recorded Investment [Line Items]
Loans	173,359	160,848
Consumer | Consumer, Indirect | Originated Loans
Financing Receivable Recorded Investment [Line Items]
Loans	173,359	160,848
Consumer | Consumer, Indirect | Originated Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	172,918	160,030
Consumer | Consumer, Indirect | Originated Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	441	818
Consumer | Consumer, Indirect | Acquired Loans
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Consumer | Consumer, Indirect | Acquired Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Consumer | Consumer, Indirect | Acquired Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	0	0
Consumer | Consumer, Direct
Financing Receivable Recorded Investment [Line Items]
Loans	41,361	43,084
Consumer | Consumer, Direct | Originated Loans
Financing Receivable Recorded Investment [Line Items]
Loans	29,773	28,706
Consumer | Consumer, Direct | Originated Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	29,590	28,490
Consumer | Consumer, Direct | Originated Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	183	216
Consumer | Consumer, Direct | Acquired Loans
Financing Receivable Recorded Investment [Line Items]
Loans	11,588	14,378
Consumer | Consumer, Direct | Acquired Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	11,422	14,223
Consumer | Consumer, Direct | Acquired Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	166	155
Consumer | Consumer, Other
Financing Receivable Recorded Investment [Line Items]
Loans	10,046	9,004
Consumer | Consumer, Other | Originated Loans
Financing Receivable Recorded Investment [Line Items]
Loans	9,901	8,876
Consumer | Consumer, Other | Originated Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	9,887	8,862
Consumer | Consumer, Other | Originated Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	14	14
Consumer | Consumer, Other | Acquired Loans
Financing Receivable Recorded Investment [Line Items]
Loans	145	128
Consumer | Consumer, Other | Acquired Loans | Performing Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	145	128
Consumer | Consumer, Other | Acquired Loans | Nonperforming Financing Receivable
Financing Receivable Recorded Investment [Line Items]
Loans	$ 0	$ 0