Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financial assets:
Fair Value	$ 553,584	$ 501,254
Mortgage loans held for sale, at fair value	25,628	33,440
Trust preferred securities
Financial assets:
Fair Value	19,756	17,671
Other debt securities
Financial assets:
Fair Value	17,930	19,554
Other equity securities
Financial assets:
Fair Value	3,599	4,317
Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	6,147	6,068
Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	296,359	259,992
Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	47,185	42,041
Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	157,436	146,545
Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	5,172	5,066
Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Fair Value	0	0
Derivative instruments	0	0
Mortgage loans held for sale, at fair value	0	0
Financial liabilities:
Derivative instruments	0	0
Significant Other Observable Inputs (Level 2)
Financial assets:
Fair Value	533,828	483,583
Derivative instruments	3,731	2,819
Mortgage loans held for sale, at fair value	25,628	33,440
Financial liabilities:
Derivative instruments	6,293	3,316
Significant Other Observable Inputs (Level 2) | Interest rate swap
Financial liabilities:
Derivative instruments	3,847
Significant Other Observable Inputs (Level 2) | Interest rate contracts
Financial assets:
Derivative instruments	2,142
Financial liabilities:
Derivative instruments	2,143
Significant Other Observable Inputs (Level 2) | Interest rate lock commitments
Financial assets:
Derivative instruments	1,584
Significant Other Observable Inputs (Level 2) | Forward commitments
Financial assets:
Derivative instruments	5	335
Financial liabilities:
Derivative instruments	303
Significant Unobservable Inputs (Level 3)
Financial assets:
Fair Value	19,756	17,671
Derivative instruments	0	0
Mortgage loans held for sale, at fair value	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring
Financial assets:
Fair Value	553,584	501,254
Derivative instruments	3,731	2,819
Mortgage loans held for sale, at fair value	25,628
Total financial assets	582,943	537,513
Financial liabilities:
Derivative instruments	6,293	3,316
Total financial liabilities	6,293	3,316
Recurring | Interest rate swap
Financial assets:
Derivative instruments	0	208
Financial liabilities:
Derivative instruments	3,847	1,428
Recurring | Interest rate contracts
Financial assets:
Derivative instruments	2,142	1,812
Financial liabilities:
Derivative instruments	2,143	1,812
Recurring | Interest rate lock commitments
Financial assets:
Derivative instruments	1,584	464
Financial liabilities:
Derivative instruments	0	52
Recurring | Mortgage loans held for sale
Financial assets:
Derivative instruments		33,440
Recurring | Forward commitments
Financial assets:
Derivative instruments	5	335
Financial liabilities:
Derivative instruments	303	24
Recurring | Trust preferred securities
Financial assets:
Fair Value	19,756	17,671
Recurring | Other debt securities
Financial assets:
Fair Value	17,930	19,554
Recurring | Other equity securities
Financial assets:
Fair Value	3,599	4,317
Recurring | Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	6,147	6,068
Recurring | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	296,359	259,992
Recurring | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	47,185	42,041
Recurring | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	157,436	146,545
Recurring | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	5,172	5,066
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Fair Value	0	0
Derivative instruments	0	0
Mortgage loans held for sale, at fair value	0
Total financial assets	0	0
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Interest rate swap
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Interest rate contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Interest rate lock commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Mortgage loans held for sale
Financial assets:
Derivative instruments		0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Forward commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Trust preferred securities
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Other debt securities
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Other equity securities
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Significant Other Observable Inputs (Level 2)
Financial assets:
Fair Value	533,828	483,583
Derivative instruments	3,731	2,819
Total financial assets	563,187	519,842
Financial liabilities:
Derivative instruments	6,293	3,316
Total financial liabilities	6,293	3,316
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swap
Financial assets:
Derivative instruments	0	208
Financial liabilities:
Derivative instruments		1,428
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate contracts
Financial assets:
Derivative instruments		1,812
Financial liabilities:
Derivative instruments		1,812
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate lock commitments
Financial assets:
Derivative instruments		464
Financial liabilities:
Derivative instruments	0	52
Recurring | Significant Other Observable Inputs (Level 2) | Mortgage loans held for sale
Financial assets:
Derivative instruments		33,440
Recurring | Significant Other Observable Inputs (Level 2) | Forward commitments
Financial liabilities:
Derivative instruments		24
Recurring | Significant Other Observable Inputs (Level 2) | Trust preferred securities
Financial assets:
Fair Value	0	0
Recurring | Significant Other Observable Inputs (Level 2) | Other debt securities
Financial assets:
Fair Value	17,930	19,554
Recurring | Significant Other Observable Inputs (Level 2) | Other equity securities
Financial assets:
Fair Value	3,599	4,317
Recurring | Significant Other Observable Inputs (Level 2) | Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	6,147	6,068
Recurring | Significant Other Observable Inputs (Level 2) | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	296,359	259,992
Recurring | Significant Other Observable Inputs (Level 2) | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	47,185	42,041
Recurring | Significant Other Observable Inputs (Level 2) | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	157,436	146,545
Recurring | Significant Other Observable Inputs (Level 2) | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	5,172	5,066
Recurring | Significant Unobservable Inputs (Level 3)
Financial assets:
Fair Value	19,756	17,671
Derivative instruments	0	0
Mortgage loans held for sale, at fair value	0
Total financial assets	19,756	17,671
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swap
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate lock commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage loans held for sale
Financial assets:
Derivative instruments		0
Recurring | Significant Unobservable Inputs (Level 3) | Forward commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Trust preferred securities
Financial assets:
Fair Value	19,756	17,671
Recurring | Significant Unobservable Inputs (Level 3) | Other debt securities
Financial assets:
Fair Value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Other equity securities
Financial assets:
Fair Value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	$ 0	$ 0