Allowance for Loan and Lease Losses (Details 7) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Originated Loans and Leases [Member]
Loans and Leases, gross	$ 1,091,259	$ 1,085,152
Originated Loans and Leases [Member] | Residential Real Estate - Home equity [Member]
Loans and Leases, gross	199,245	202,578
Originated Loans and Leases [Member] | Residential Real Estate - Mortgages [Member]
Loans and Leases, gross	834,298	823,841
Originated Loans and Leases [Member] | Consumer Indirect [Member]
Loans and Leases, gross	17,714	17,829
Originated Loans and Leases [Member] | Consumer Other [Member]
Loans and Leases, gross	40,002	40,904
Originated Loans and Leases [Member] | Performing [Member]
Loans and Leases, gross	1,084,218	1,077,150
Originated Loans and Leases [Member] | Performing [Member] | Residential Real Estate - Home equity [Member]
Loans and Leases, gross	197,765	200,647
Originated Loans and Leases [Member] | Performing [Member] | Residential Real Estate - Mortgages [Member]
Loans and Leases, gross	828,901	817,952
Originated Loans and Leases [Member] | Performing [Member] | Consumer Indirect [Member]
Loans and Leases, gross	17,644	17,722
Originated Loans and Leases [Member] | Performing [Member] | Consumer Other [Member]
Loans and Leases, gross	39,908	40,829
Originated Loans and Leases [Member] | Nonperforming [Member]
Loans and Leases, gross	7,041	8,002
Originated Loans and Leases [Member] | Nonperforming [Member] | Residential Real Estate - Home equity [Member]
Loans and Leases, gross	1,480	1,931
Originated Loans and Leases [Member] | Nonperforming [Member] | Residential Real Estate - Mortgages [Member]
Loans and Leases, gross	5,397	5,889
Originated Loans and Leases [Member] | Nonperforming [Member] | Consumer Indirect [Member]
Loans and Leases, gross	70	107
Originated Loans and Leases [Member] | Nonperforming [Member] | Consumer Other [Member]
Loans and Leases, gross	94	75
Acquired Loans and Leases [Member]
Loans and Leases, gross	68,698	70,494
Acquired Loans and Leases [Member] | Residential Real Estate - Home equity [Member]
Loans and Leases, gross	40,842	42,092
Acquired Loans and Leases [Member] | Residential Real Estate - Mortgages [Member]
Loans and Leases, gross	26,871	27,491
Acquired Loans and Leases [Member] | Consumer Indirect [Member]
Loans and Leases, gross	0	0
Acquired Loans and Leases [Member] | Consumer Other [Member]
Loans and Leases, gross	985	911
Acquired Loans and Leases [Member] | Performing [Member]
Loans and Leases, gross	65,840	68,393
Acquired Loans and Leases [Member] | Performing [Member] | Residential Real Estate - Home equity [Member]
Loans and Leases, gross	40,245	41,380
Acquired Loans and Leases [Member] | Performing [Member] | Residential Real Estate - Mortgages [Member]
Loans and Leases, gross	24,610	26,102
Acquired Loans and Leases [Member] | Performing [Member] | Consumer Indirect [Member]
Loans and Leases, gross	0	0
Acquired Loans and Leases [Member] | Performing [Member] | Consumer Other [Member]
Loans and Leases, gross	985	911
Acquired Loans and Leases [Member] | Nonperforming [Member]
Loans and Leases, gross	2,858	2,101
Acquired Loans and Leases [Member] | Nonperforming [Member] | Residential Real Estate - Home equity [Member]
Loans and Leases, gross	597	712
Acquired Loans and Leases [Member] | Nonperforming [Member] | Residential Real Estate - Mortgages [Member]
Loans and Leases, gross	2,261	1,389
Acquired Loans and Leases [Member] | Nonperforming [Member] | Consumer Indirect [Member]
Loans and Leases, gross	0	0
Acquired Loans and Leases [Member] | Nonperforming [Member] | Consumer Other [Member]
Loans and Leases, gross	$ 0	$ 0