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Allowance for Loan and Lease Losses (Troubled Debt Restructuring) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
loans
Sep. 30, 2014
USD ($)
loans
Sep. 30, 2015
USD ($)
loans
Sep. 30, 2014
USD ($)
loans
Dec. 31, 2014
USD ($)
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment $ 145,719   $ 145,719   $ 151,479
Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 77 40 282 180  
Financing Receivable, Modifications, Recorded Investment $ 112,632   $ 112,632   104,607
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 8,906 $ 5,344 $ 27,484 $ 27,743  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 10 5 19 12  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 2,391 $ 283 $ 2,808 $ 2,313  
PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 4 10 13 77  
Financing Receivable, Modifications, Recorded Investment $ 33,087   $ 33,087   46,872
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 328 $ 3,952 $ 949 $ 12,228  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 4 1 12  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 47 $ 448 $ 47 $ 519  
Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 106,125   106,125   118,166
Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 4,109   4,109   3,037
Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 84,769   84,769   101,121
Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,984   1,984   2,823
Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 13,855   13,855   10,528
Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,408   1,408   623
Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 0   0   34
Noncommerical          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 39,594   39,594   33,313
Noncommerical | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,045   1,045   1,391
Noncommerical | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 31,103   31,103   27,252
Noncommerical | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 4,905   4,905   3,675
Noncommerical | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 2,541   2,541   995
Accruing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 119,262   119,262   135,963
Accruing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 86,892   86,892   91,316
Accruing | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 32,370   32,370   44,647
Accruing | Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 88,068   88,068   107,305
Accruing | Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 3,479   3,479   2,591
Accruing | Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 71,885   71,885   92,184
Accruing | Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,889   1,889   2,374
Accruing | Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 9,733   9,733   9,864
Accruing | Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,082   1,082   258
Accruing | Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 0   0   34
Accruing | Noncommerical          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 31,194   31,194   28,658
Accruing | Noncommerical | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,045   1,045   1,391
Accruing | Noncommerical | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 24,103   24,103   22,597
Accruing | Noncommerical | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 3,592   3,592   3,675
Accruing | Noncommerical | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 2,454   2,454   995
Nonaccruing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 26,457   26,457   15,516
Nonaccruing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 25,740   25,740   13,291
Nonaccruing | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 717   717   2,225
Nonaccruing | Commercial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 18,057   18,057   10,861
Nonaccruing | Commercial | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 630   630   446
Nonaccruing | Commercial | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 12,884   12,884   8,937
Nonaccruing | Commercial | Other commercial real estate          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 95   95   449
Nonaccruing | Commercial | Commercial and industrial          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 4,122   4,122   664
Nonaccruing | Commercial | Lease financing          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 326   326   365
Nonaccruing | Commercial | Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 0   0   0
Nonaccruing | Noncommerical          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 8,400   8,400   4,655
Nonaccruing | Noncommerical | Construction and land development          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 0   0   0
Nonaccruing | Noncommerical | Mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 7,000   7,000   4,655
Nonaccruing | Noncommerical | Revolving mortgage          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment 1,313   1,313   0
Nonaccruing | Noncommerical | Consumer and Other          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Recorded Investment $ 87   $ 87   $ 0
Interest only period provided | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 5 11  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 92 $ 0 $ 1,272 $ 2,995  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 1 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 592  
Interest only period provided | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 44  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 44  
Interest only period provided | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     2 6  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 68 $ 2,449  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 592  
Interest only period provided | Commercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 44  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 44  
Interest only period provided | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     2 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 1,112 $ 375  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Interest only period provided | Commercial | Lease financing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 131  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Interest only period provided | Commercial | Other | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 40  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Interest only period provided | Noncommerical | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 92 $ 0 $ 92 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 4 8 14 42  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,520 $ 764 $ 3,097 $ 7,274  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 204 $ 0  
Loan term extension | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 1 0 3  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 348 $ 0 $ 670  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 3 0 4  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 381 $ 0 $ 381  
Loan term extension | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 204 $ 189  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 204 $ 0  
Loan term extension | Commercial | Construction and land development | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 1 0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 348 $ 0 $ 348  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 1 7 11  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 75 $ 462 $ 1,406 $ 4,072  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 3 0 4 4  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,445 $ 0 $ 1,473 $ 2,040  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Commercial | Lease financing | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 144  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Loan term extension | Noncommerical | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 2 0 3  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 141 $ 0 $ 175  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Noncommerical | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 2 1 5  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 81 $ 5 $ 122  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Noncommerical | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 3 0 15  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 80 $ 0 $ 532  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Loan term extension | Noncommerical | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 0 0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 0 $ 0 $ 322  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 3 0 4  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 381 $ 0 $ 381  
Loan term extension | Noncommerical | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 9 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 45 28 172 101  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 5,008 $ 4,468 $ 18,029 $ 15,313  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 2 8 5  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 1,915 $ 221 $ 1,970 $ 1,371  
Below market interest rate | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 3 9 11 46  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 223 $ 3,604 $ 766 $ 9,841  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 1 1 4  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 47 $ 67 $ 47 $ 94  
Below market interest rate | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 4 0 14 10  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 193 $ 0 $ 626 $ 371  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Below market interest rate | Commercial | Construction and land development | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 0 $ 308  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 8 6 31 29  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,248 $ 3,062 $ 7,880 $ 11,399  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 1 1 3  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 176 $ 1,757 $ 1,276  
Below market interest rate | Commercial | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 6 0 15  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 3,377 $ 0 $ 5,539  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 1 0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 67 $ 0 $ 94  
Below market interest rate | Commercial | Other commercial real estate | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 0 2 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 124 $ 0 $ 124 $ 347  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Below market interest rate | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 3 3 13 11  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,797 $ 462 $ 2,476 $ 772  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 1,757 $ 0 $ 0 $ 0  
Below market interest rate | Commercial | Other | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 1,464 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Below market interest rate | Noncommerical | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 3 2 11  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 173 $ 253 $ 590  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Below market interest rate | Noncommerical | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 5 13 5  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 17 $ 162 $ 120 $ 162  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Below market interest rate | Noncommerical | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 25 11 90 29  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 1,592 $ 609 $ 4,946 $ 1,402  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 4 1 7 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 158 $ 45 $ 213 $ 95  
Below market interest rate | Noncommerical | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 3 3 11 29  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 223 $ 227 $ 766 $ 3,994  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 0 1 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 47 $ 0 $ 47 $ 0  
Below market interest rate | Noncommerical | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 6 5  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 37 $ 0 $ 140 $ 270  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 27 4 91 26  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 2,286 $ 112 $ 5,086 $ 2,161  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 5 3 9 5  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 476 $ 62 $ 634 $ 350  
Discharged from bankruptcy | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 2 26  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 105 $ 0 $ 183 $ 1,673  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Commercial | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2   2 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 21 $ 0 $ 21 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Commercial | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 1 3 2  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 965 $ 0 $ 1,562 $ 970  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 1 1 1 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 275 $ 0 $ 275 $ 0  
Discharged from bankruptcy | Commercial | Commercial and industrial | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 2 0 3 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 148 $ 0 $ 148 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0  
Discharged from bankruptcy | Noncommerical | Construction and land development | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 0 0 0 1  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 0 $ 0 $ 0 $ 62  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 1 0 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 62 $ 0 $ 62  
Discharged from bankruptcy | Noncommerical | Consumer | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 6 1 16 4  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 91 $ 13 $ 187 $ 18  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 2 0 2 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 39 $ 0 $ 39 $ 0  
Discharged from bankruptcy | Noncommerical | Mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 6 0 20 9  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 395 $ 0 $ 938 $ 691  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 288  
Discharged from bankruptcy | Noncommerical | Mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans     1 26  
Financing Receivable, Modifications, Post-Modification Recorded Investment     $ 78 $ 1,673  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans     0 2  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment     $ 0 $ 0  
Discharged from bankruptcy | Noncommerical | Revolving mortgage | Non-PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 9 2 47 10  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 666 $ 99 $ 2,230 $ 420  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 2 1 6 1  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 162 $ 0 $ 320 $ 0  
Discharged from bankruptcy | Noncommerical | Revolving mortgage | PCI Loans          
Financing Receivable, Modifications [Line Items]          
Financing Receivable, Modifications, Number of Contracts | loans 1 0 1 0  
Financing Receivable, Modifications, Post-Modification Recorded Investment $ 105 $ 0 $ 105 $ 0  
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans 0 0 0 0  
Financing Receivable, Modifications, Subsequent Default, Recorded Investment $ 0 $ 0 $ 0 $ 0