Allowance for Loan and Lease Losses (Details 7) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Originated Loans and Leases
Loans and Leases, gross	$ 1,235,510	$ 1,215,883
Originated Loans and Leases | Residential Real Estate - Home equity
Loans and Leases, gross	209,740	209,277
Originated Loans and Leases | Residential Real Estate - Mortgages
Loans and Leases, gross	969,153	947,378
Originated Loans and Leases | Consumer Indirect
Loans and Leases, gross	13,853	14,835
Originated Loans and Leases | Consumer Other
Loans and Leases, gross	42,764	44,393
Originated Loans and Leases | Performing
Loans and Leases, gross	1,228,405	1,208,259
Originated Loans and Leases | Performing | Residential Real Estate - Home equity
Loans and Leases, gross	208,473	207,261
Originated Loans and Leases | Performing | Residential Real Estate - Mortgages
Loans and Leases, gross	963,494	941,936
Originated Loans and Leases | Performing | Consumer Indirect
Loans and Leases, gross	13,683	14,669
Originated Loans and Leases | Performing | Consumer Other
Loans and Leases, gross	42,755	44,393
Originated Loans and Leases | Nonperforming
Loans and Leases, gross	7,105	7,624
Originated Loans and Leases | Nonperforming | Residential Real Estate - Home equity
Loans and Leases, gross	1,267	2,016
Originated Loans and Leases | Nonperforming | Residential Real Estate - Mortgages
Loans and Leases, gross	5,659	5,442
Originated Loans and Leases | Nonperforming | Consumer Indirect
Loans and Leases, gross	170	166
Originated Loans and Leases | Nonperforming | Consumer Other
Loans and Leases, gross	9	0
Total Acquired Loans
Loans and Leases, gross	60,916	63,986
Total Acquired Loans | Residential Real Estate - Home equity
Loans and Leases, gross	35,291	37,737
Total Acquired Loans | Residential Real Estate - Mortgages
Loans and Leases, gross	24,824	25,423
Total Acquired Loans | Consumer Indirect
Loans and Leases, gross	0	0
Total Acquired Loans | Consumer Other
Loans and Leases, gross	801	826
Total Acquired Loans | Performing
Loans and Leases, gross	58,045	62,383
Total Acquired Loans | Performing | Residential Real Estate - Home equity
Loans and Leases, gross	34,292	37,074
Total Acquired Loans | Performing | Residential Real Estate - Mortgages
Loans and Leases, gross	22,952	24,483
Total Acquired Loans | Performing | Consumer Indirect
Loans and Leases, gross	0	0
Total Acquired Loans | Performing | Consumer Other
Loans and Leases, gross	801	826
Total Acquired Loans | Nonperforming
Loans and Leases, gross	2,871	1,603
Total Acquired Loans | Nonperforming | Residential Real Estate - Home equity
Loans and Leases, gross	999	663
Total Acquired Loans | Nonperforming | Residential Real Estate - Mortgages
Loans and Leases, gross	1,872	940
Total Acquired Loans | Nonperforming | Consumer Indirect
Loans and Leases, gross	0	0
Total Acquired Loans | Nonperforming | Consumer Other
Loans and Leases, gross	$ 0	$ 0