Fair Value (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Assets:
Securities	$ 619,578	$ 630,995
Loans Held-for-Sale	6,290	6,311
Derivative Assets	853	507
Derivative Liabilities	889	508
U.S. Treasury and Agency Securities
Assets:
Securities	19,920	19,561
Obligations of State and Political Subdivisions
Assets:
Securities	158,800	153,777
Mortgage-backed Securities - Residential
Assets:
Securities	440,505	457,304
Equity Securities
Assets:
Securities	353	353
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Securities	0	0
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury and Agency Securities
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of State and Political Subdivisions
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed Securities - Residential
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities
Assets:
Securities	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Securities	609,623	620,501
Loans Held-for-Sale	6,290	6,311
Derivative Assets	853	507
Derivative Liabilities	889	508
Significant Other Observable Inputs (Level 2) | U.S. Treasury and Agency Securities
Assets:
Securities	19,920	19,561
Significant Other Observable Inputs (Level 2) | Obligations of State and Political Subdivisions
Assets:
Securities	149,198	143,636
Significant Other Observable Inputs (Level 2) | Mortgage-backed Securities - Residential
Assets:
Securities	440,505	457,304
Significant Other Observable Inputs (Level 2) | Equity Securities
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3)
Assets:
Securities	9,955	10,494
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Significant Unobservable Inputs (Level 3) | U.S. Treasury and Agency Securities
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3) | Obligations of State and Political Subdivisions
Assets:
Securities	9,602	10,141
Significant Unobservable Inputs (Level 3) | Mortgage-backed Securities - Residential
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3) | Equity Securities
Assets:
Securities	$ 353	$ 353