Fair Value (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets:
Derivative Assets	$ 536	$ 866
Derivative Liabilities	444	737
Fair Value, Measurements, Recurring [Member]
Assets:
Securities	613,170	606,032
Loans Held-for-Sale	9,844	9,265
Derivative Assets	536	866
Derivative Liabilities	444	737
Fair Value, Measurements, Recurring [Member] | U.S. Treasury and Agency Securities [Member]
Assets:
Securities	19,129	18,952
Fair Value, Measurements, Recurring [Member] | Corporate Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Obligations of State and Political Subdivisions [Member]
Assets:
Securities	116,556	113,497
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities - Residential [Member]
Assets:
Securities	477,132	473,230
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Assets:
Securities	353	353
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Securities	0	0
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury and Agency Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Obligations of State and Political Subdivisions [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage-backed Securities - Residential [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets:
Securities	602,341	594,847
Loans Held-for-Sale	9,844	9,265
Derivative Assets	536	866
Derivative Liabilities	444	737
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury and Agency Securities [Member]
Assets:
Securities	19,129	18,952
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of State and Political Subdivisions [Member]
Assets:
Securities	106,080	102,665
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities - Residential [Member]
Assets:
Securities	477,132	473,230
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets:
Securities	10,829	11,185
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Treasury and Agency Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Corporate Securities [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Obligations of State and Political Subdivisions [Member]
Assets:
Securities	10,476	10,832
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed Securities - Residential [Member]
Assets:
Securities	0	0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member]
Assets:
Securities	$ 353	$ 353