Fair Value (Recurring Basis) (Details) (Recurring, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	$ 377,051	$ 348,562
Total assets	377,329	348,879
Total liabilities	2,521	2,610
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative liabilities	2,396	2,484
Mortgage derivative
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative assets	278	317
Derivative liabilities	125	126
U.S Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	89,775	72,615
Mortgage-backed investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	198,647	190,563
Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	73,474	71,461
Collateralized debt obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	956	946
Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	14,199	12,977
Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Total assets	0	0
Total liabilities	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative liabilities	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Mortgage derivative
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative assets	0	0
Derivative liabilities	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | U.S Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Mortgage-backed investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Collateralized debt obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Quoted Prices In Active Markets For Identical Assets (Level 1) | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	376,095	347,616
Total assets	376,095	347,616
Total liabilities	0	0
Significant Other Observable Inputs (Level 2) | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) | Mortgage derivative
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative assets	0	0
Derivative liabilities	0	0
Significant Other Observable Inputs (Level 2) | U.S Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	89,775	72,615
Significant Other Observable Inputs (Level 2) | Mortgage-backed investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	198,647	190,563
Significant Other Observable Inputs (Level 2) | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	73,474	71,461
Significant Other Observable Inputs (Level 2) | Collateralized debt obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Significant Other Observable Inputs (Level 2) | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	14,199	12,977
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	956	946
Total assets	1,234	1,263
Total liabilities	2,521	2,610
Significant Unobservable Inputs (Level 3) | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative liabilities	2,396	2,484
Significant Unobservable Inputs (Level 3) | Mortgage derivative
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Derivative assets	278	317
Derivative liabilities	125	126
Significant Unobservable Inputs (Level 3) | U.S Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Mortgage-backed investments
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Collateralized debt obligations
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	956	946
Significant Unobservable Inputs (Level 3) | Other debt securities
Fair Value, Assets and Liabilities Measured on Recurring Basis [Abstract]
Securities available for sale	$ 0	$ 0