Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financial assets:
Fair Value	$ 674,248	$ 646,805
Trust preferred securities
Financial assets:
Fair Value	18,389	19,469
Other debt securities
Financial assets:
Fair Value	22,145	19,333
Other equity securities
Financial assets:
Fair Value	0	4,340
Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	2,158	6,200
Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	409,317	364,540
Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	50,863	59,759
Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	168,826	168,060
Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	2,550	5,104
Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Fair Value	0	0
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Significant Other Observable Inputs (Level 2)
Financial assets:
Fair Value	655,859	627,336
Derivative instruments	9,108	7,498
Financial liabilities:
Derivative instruments	5,910	7,319
Significant Other Observable Inputs (Level 2) | Interest rate swap
Financial liabilities:
Derivative instruments	3,410
Significant Other Observable Inputs (Level 2) | Interest rate contracts
Financial assets:
Derivative instruments	1,985
Financial liabilities:
Derivative instruments	1,985
Significant Other Observable Inputs (Level 2) | Interest rate lock commitments
Financial assets:
Derivative instruments	2,643
Significant Other Observable Inputs (Level 2) | Forward commitments
Financial assets:
Derivative instruments	4,480	446
Financial liabilities:
Derivative instruments	269
Significant Unobservable Inputs (Level 3)
Financial assets:
Fair Value	18,389	19,469
Derivative instruments	0	0
Financial liabilities:
Derivative instruments	0	0
Recurring
Financial assets:
Fair Value	674,248	646,805
Derivative instruments	9,108	7,498
Total financial assets	861,222	879,557
Financial liabilities:
Derivative instruments	5,910	7,319
Total financial liabilities	5,910	7,319
Recurring | Interest rate swap
Financial liabilities:
Derivative instruments	3,410	4,266
Recurring | Interest rate contracts
Financial assets:
Derivative instruments	1,985	2,544
Financial liabilities:
Derivative instruments	1,985	2,544
Recurring | Interest rate lock commitments
Financial assets:
Derivative instruments	2,643	4,508
Financial liabilities:
Derivative instruments	246
Recurring | Mortgage loans held for sale
Financial assets:
Derivative instruments	177,866	225,254
Recurring | Forward commitments
Financial assets:
Derivative instruments	4,480	446
Financial liabilities:
Derivative instruments	269	509
Recurring | Trust preferred securities
Financial assets:
Fair Value	18,389	19,469
Recurring | Other debt securities
Financial assets:
Fair Value	22,145	19,333
Recurring | Other equity securities
Financial assets:
Fair Value		4,340
Recurring | Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	2,158	6,200
Recurring | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	409,317	364,540
Recurring | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	50,863	59,759
Recurring | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	168,826	168,060
Recurring | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	2,550	5,104
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Fair Value	0	0
Derivative instruments	0	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 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
Recurring | Quoted Prices In Active Markets for Identical Assets (Level 1) | Mortgage loans held for sale
Financial assets:
Derivative instruments	0	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
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	655,859	627,336
Derivative instruments	9,108	7,498
Total financial assets	842,833	860,088
Financial liabilities:
Derivative instruments	5,910	7,319
Total financial liabilities	5,910	7,319
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swap
Financial liabilities:
Derivative instruments		4,266
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate contracts
Financial assets:
Derivative instruments		2,544
Financial liabilities:
Derivative instruments		2,544
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate lock commitments
Financial assets:
Derivative instruments		4,508
Financial liabilities:
Derivative instruments	246
Recurring | Significant Other Observable Inputs (Level 2) | Mortgage loans held for sale
Financial assets:
Derivative instruments	177,866	225,254
Recurring | Significant Other Observable Inputs (Level 2) | Forward commitments
Financial liabilities:
Derivative instruments		509
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	22,145	19,333
Recurring | Significant Other Observable Inputs (Level 2) | Other equity securities
Financial assets:
Fair Value		4,340
Recurring | Significant Other Observable Inputs (Level 2) | Obligations of other U.S. Government agencies and corporations
Financial assets:
Fair Value	2,158	6,200
Recurring | Significant Other Observable Inputs (Level 2) | Government agency mortgage backed securities | Residential mortgage backed securities:
Financial assets:
Fair Value	409,317	364,540
Recurring | Significant Other Observable Inputs (Level 2) | Government agency mortgage backed securities | Commercial mortgage backed securities:
Financial assets:
Fair Value	50,863	59,759
Recurring | Significant Other Observable Inputs (Level 2) | Government agency collateralized mortgage obligations | Residential mortgage backed securities:
Financial assets:
Fair Value	168,826	168,060
Recurring | Significant Other Observable Inputs (Level 2) | Government agency collateralized mortgage obligations | Commercial mortgage backed securities:
Financial assets:
Fair Value	2,550	5,104
Recurring | Significant Unobservable Inputs (Level 3)
Financial assets:
Fair Value	18,389	19,469
Derivative instruments	0	0
Total financial assets	18,389	19,469
Financial liabilities:
Derivative instruments	0	0
Total financial liabilities	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swap
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
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage loans held for sale
Financial assets:
Derivative instruments	0	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	18,389	19,469
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
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