Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financial assets:
Securities available for sale	$ 569,048	$ 501,254
Derivative instruments	0	208
Trust preferred securities
Financial assets:
Securities available for sale	18,309	17,671
Other debt securities
Financial assets:
Securities available for sale	18,701	19,554
Other equity securities
Financial assets:
Securities available for sale	4,458	4,317
Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	6,122	6,068
Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Securities available for sale	305,668	259,992
Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	47,383	42,041
Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Securities available for sale	162,946	146,545
Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	5,461	5,066
Recurring
Financial assets:
Securities available for sale	569,048	501,254
Derivative instruments	3,172	2,819
Total financial assets	600,336	537,513
Financial liabilities:
Derivative instruments	4,747	3,316
Total financial liabilities	4,747	3,316
Recurring | Interest rate swaps
Financial assets:
Derivative instruments	0	208
Financial liabilities:
Derivative instruments	2,838	1,428
Recurring | Interest rate contracts
Financial assets:
Derivative instruments	1,285	1,812
Financial liabilities:
Derivative instruments	1,285	1,812
Recurring | Interest rate lock commitments
Financial assets:
Derivative instruments	1,887	464
Financial liabilities:
Derivative instruments	0	52
Recurring | Forward contracts
Financial assets:
Derivative instruments	0	335
Financial liabilities:
Derivative instruments	624	24
Recurring | Mortgage loans held for sale
Financial assets:
Derivative instruments	28,116	33,440
Recurring | Trust preferred securities
Financial assets:
Securities available for sale	18,309	17,671
Recurring | Other debt securities
Financial assets:
Securities available for sale	18,701	19,554
Recurring | Other equity securities
Financial assets:
Securities available for sale	4,458	4,317
Recurring | Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	6,122	6,068
Recurring | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Securities available for sale	305,668	259,992
Recurring | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	47,383	42,041
Recurring | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Securities available for sale	162,946	146,545
Recurring | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	5,461	5,066
Recurring | Level 1
Financial assets:
Securities available for sale	0	0
Derivative instruments	0	0
Total financial assets	0	0
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring | Level 1 | Interest rate swaps
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 1 | Interest rate contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 1 | Interest rate lock commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 1 | Forward contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 1 | Mortgage loans held for sale
Financial assets:
Derivative instruments	0	0
Recurring | Level 1 | Trust preferred securities
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Other debt securities
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Other equity securities
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 1 | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 2
Financial assets:
Securities available for sale	550,739	483,583
Derivative instruments	3,172	2,819
Total financial assets	582,027	519,842
Financial liabilities:
Derivative instruments	4,747	3,316
Total financial liabilities	4,747	3,316
Recurring | Level 2 | Interest rate swaps
Financial assets:
Derivative instruments	0	208
Financial liabilities:
Derivative instruments	2,838	1,428
Recurring | Level 2 | Interest rate contracts
Financial assets:
Derivative instruments	1,285	1,812
Financial liabilities:
Derivative instruments	1,285	1,812
Recurring | Level 2 | Interest rate lock commitments
Financial assets:
Derivative instruments	1,887	464
Financial liabilities:
Derivative instruments	0	52
Recurring | Level 2 | Forward contracts
Financial assets:
Derivative instruments	0	335
Financial liabilities:
Derivative instruments	624	24
Recurring | Level 2 | Mortgage loans held for sale
Financial assets:
Derivative instruments	28,116	33,440
Recurring | Level 2 | Trust preferred securities
Financial assets:
Securities available for sale	0	0
Recurring | Level 2 | Other debt securities
Financial assets:
Securities available for sale	18,701	19,554
Recurring | Level 2 | Other equity securities
Financial assets:
Securities available for sale	4,458	4,317
Recurring | Level 2 | Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	6,122	6,068
Recurring | Level 2 | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Securities available for sale	305,668	259,992
Recurring | Level 2 | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	47,383	42,041
Recurring | Level 2 | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Securities available for sale	162,946	146,545
Recurring | Level 2 | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	5,461	5,066
Recurring | Level 3
Financial assets:
Securities available for sale	18,309	17,671
Derivative instruments	0	0
Total financial assets	18,309	17,671
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring | Level 3 | Interest rate swaps
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 3 | Interest rate contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 3 | Interest rate lock commitments
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 3 | Forward contracts
Financial assets:
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring | Level 3 | Mortgage loans held for sale
Financial assets:
Derivative instruments	0	0
Recurring | Level 3 | Trust preferred securities
Financial assets:
Securities available for sale	18,309	17,671
Recurring | Level 3 | Other debt securities
Financial assets:
Securities available for sale	0	0
Recurring | Level 3 | Other equity securities
Financial assets:
Securities available for sale	0	0
Recurring | Level 3 | Obligations of other U.S. Government agencies and corporations
Financial assets:
Securities available for sale	0	0
Recurring | Level 3 | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 3 | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 3 | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Securities available for sale	0	0
Recurring | Level 3 | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Securities available for sale	$ 0	$ 0