Fair Value Measurements (Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	$ 684,570	$ 586,809
Government sponsored agencies [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	93,763	97,557
State and political subdivisions [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	43,798	49,965
Residential mortgage-backed securities [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	299,366	99,411
Collateralized mortgage obligations [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	180,941	263,592
Corporate bonds [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	65,275	69,795
Preferred stock [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	1,427	6,489
Fair Value Measurements Recurring [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	684,570	582,054
Loans held-for-sale	5,219	17,665
Total assets measured at fair value on a recurring basis	689,789	599,719
Fair Value Measurements Recurring [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Loans held-for-sale	0	0
Total assets measured at fair value on a recurring basis	0	0
Fair Value Measurements Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	684,570	582,054
Loans held-for-sale	5,219	17,665
Total assets measured at fair value on a recurring basis	689,789	599,719
Fair Value Measurements Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Loans held-for-sale	0	0
Total assets measured at fair value on a recurring basis	0	0
Fair Value Measurements Recurring [Member] | Government sponsored agencies [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	93,763	97,557
Fair Value Measurements Recurring [Member] | Government sponsored agencies [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Government sponsored agencies [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	93,763	97,557
Fair Value Measurements Recurring [Member] | Government sponsored agencies [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | State and political subdivisions [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	43,798	49,965
Fair Value Measurements Recurring [Member] | State and political subdivisions [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | State and political subdivisions [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	43,798	49,965
Fair Value Measurements Recurring [Member] | State and political subdivisions [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Residential mortgage-backed securities [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	299,366	99,411
Fair Value Measurements Recurring [Member] | Residential mortgage-backed securities [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Residential mortgage-backed securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	299,366	99,411
Fair Value Measurements Recurring [Member] | Residential mortgage-backed securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Collateralized mortgage obligations [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	180,941	263,592
Fair Value Measurements Recurring [Member] | Collateralized mortgage obligations [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Collateralized mortgage obligations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	180,941	263,592
Fair Value Measurements Recurring [Member] | Collateralized mortgage obligations [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Corporate bonds [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	65,275	69,795
Fair Value Measurements Recurring [Member] | Corporate bonds [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Corporate bonds [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	65,275	69,795
Fair Value Measurements Recurring [Member] | Corporate bonds [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Preferred stock [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	1,427	1,734
Fair Value Measurements Recurring [Member] | Preferred stock [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	0	0
Fair Value Measurements Recurring [Member] | Preferred stock [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	1,427	1,734
Fair Value Measurements Recurring [Member] | Preferred stock [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of assets measured at fair value on a recurring basis
Available-for-sale, at fair value	$ 0	$ 0