Allowance for Loan and Lease Losses (Details 7) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Orginated Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	$ 849,710	$ 792,511
Orginated Loans and Leases | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	840,680	783,138
Orginated Loans and Leases | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	9,030	9,373
Orginated Loans and Leases | Residential Real Estate - Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	161,191	159,720
Orginated Loans and Leases | Residential Real Estate - Home equity | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	159,295	157,959
Orginated Loans and Leases | Residential Real Estate - Home equity | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	1,896	1,761
Orginated Loans and Leases | Residential Real Estate - Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	632,996	573,861
Orginated Loans and Leases | Residential Real Estate - Mortgages | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	626,274	566,542
Orginated Loans and Leases | Residential Real Estate - Mortgages | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	6,722	7,319
Orginated Loans and Leases | Consumer and other - Indirect
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	23,783	26,679
Orginated Loans and Leases | Consumer and other - Indirect | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	23,595	26,402
Orginated Loans and Leases | Consumer and other - Indirect | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	188	277
Orginated Loans and Leases | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	31,740	32,251
Orginated Loans and Leases | Consumer and other | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	31,516	32,235
Orginated Loans and Leases | Consumer and other | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	224	16
Acquired Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	113,819	124,797
Acquired Loans and Leases | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	110,268	122,536
Acquired Loans and Leases | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	3,551	2,261
Acquired Loans and Leases | Residential Real Estate - Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	74,396	81,657
Acquired Loans and Leases | Residential Real Estate - Home equity | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	72,866	80,204
Acquired Loans and Leases | Residential Real Estate - Home equity | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	1,530	1,453
Acquired Loans and Leases | Residential Real Estate - Mortgages
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	38,037	41,618
Acquired Loans and Leases | Residential Real Estate - Mortgages | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	36,016	40,810
Acquired Loans and Leases | Residential Real Estate - Mortgages | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	2,021	808
Acquired Loans and Leases | Consumer and other - Indirect
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	12	24
Acquired Loans and Leases | Consumer and other - Indirect | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	12	24
Acquired Loans and Leases | Consumer and other - Indirect | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	0	0
Acquired Loans and Leases | Consumer and other
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	1,374	1,498
Acquired Loans and Leases | Consumer and other | Performing
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	1,374	1,498
Acquired Loans and Leases | Consumer and other | Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases, gross	$ 0	$ 0