v3.26.1
Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income $ 19,196,172 $ 19,047,039
Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 19,009,740 18,871,309
Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 186,432 175,730
30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 31,141 89,162
90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 51 288
Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 18,978,548 18,781,859
Commercial and industrial    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,063,069 2,818,326
Commercial and industrial | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,016,848 2,790,433
Commercial and industrial | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 46,221 27,893
Commercial and industrial | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,995 6,580
Commercial and industrial | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4 109
Commercial and industrial | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,013,849 2,783,744
Construction and land development    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,009,664 1,905,636
Construction and land development | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,003,729 1,898,064
Construction and land development | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 5,935 7,572
Construction and land development | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,387 735
Construction and land development | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 158
Construction and land development | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,001,342 1,897,171
Construction and land development | Residential    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 416,894 382,773
Construction and land development | Residential | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 414,954 380,740
Construction and land development | Residential | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,940 2,033
Construction and land development | Residential | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 44 59
Construction and land development | Residential | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Construction and land development | Residential | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 414,910 380,681
Construction and land development | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,592,770 1,522,863
Construction and land development | Other | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,588,775 1,517,324
Construction and land development | Other | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,995 5,539
Construction and land development | Other | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,343 676
Construction and land development | Other | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 158
Construction and land development | Other | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,586,432 1,516,490
Real Estate - 1-4 Family Mortgage    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4,568,039 4,635,033
Real Estate - 1-4 Family Mortgage | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4,501,631 4,569,609
Real Estate - 1-4 Family Mortgage | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 66,408 65,424
Real Estate - 1-4 Family Mortgage | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 23,218 60,264
Real Estate - 1-4 Family Mortgage | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 22 7
Real Estate - 1-4 Family Mortgage | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4,478,391 4,509,338
Real Estate - 1-4 Family Mortgage | First lien    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,788,776 3,844,097
Real Estate - 1-4 Family Mortgage | First lien | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,727,278 3,783,223
Real Estate - 1-4 Family Mortgage | First lien | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 61,498 60,874
Real Estate - 1-4 Family Mortgage | First lien | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 20,205 55,636
Real Estate - 1-4 Family Mortgage | First lien | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 22 0
Real Estate - 1-4 Family Mortgage | First lien | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,707,051 3,727,587
Real Estate - 1-4 Family Mortgage | Junior lien    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 53,068 52,943
Real Estate - 1-4 Family Mortgage | Junior lien | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 51,235 51,467
Real Estate - 1-4 Family Mortgage | Junior lien | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,833 1,476
Real Estate - 1-4 Family Mortgage | Junior lien | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 75 743
Real Estate - 1-4 Family Mortgage | Junior lien | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 7
Real Estate - 1-4 Family Mortgage | Junior lien | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 51,160 50,717
Real Estate - 1-4 Family Mortgage | Home equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 726,195 737,993
Real Estate - 1-4 Family Mortgage | Home equity | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 723,118 734,919
Real Estate - 1-4 Family Mortgage | Home equity | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,077 3,074
Real Estate - 1-4 Family Mortgage | Home equity | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 2,938 3,885
Real Estate - 1-4 Family Mortgage | Home equity | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Real Estate - 1-4 Family Mortgage | Home equity | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 720,180 731,034
Commercial real estate - owner occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 6,123,500 6,245,480
Commercial real estate - owner occupied | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 6,077,753 6,202,085
Commercial real estate - owner occupied | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 45,747 43,395
Commercial real estate - owner occupied | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 661 11,595
Commercial real estate - owner occupied | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Commercial real estate - owner occupied | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 6,077,092 6,190,490
Commercial real estate - owner occupied | Owner-occupied    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,332,728 3,334,664
Commercial real estate - owner occupied | Owner-occupied | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,310,766 3,303,361
Commercial real estate - owner occupied | Owner-occupied | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 21,962 31,303
Commercial real estate - owner occupied | Owner-occupied | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,310 9,109
Commercial real estate - owner occupied | Owner-occupied | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Commercial real estate - owner occupied | Owner-occupied | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 3,309,456 3,294,252
Commercial real estate - owner occupied | Multi family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,161,071 1,392,779
Commercial real estate - owner occupied | Multi family | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,159,859 1,391,994
Commercial real estate - owner occupied | Multi family | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,212 785
Commercial real estate - owner occupied | Multi family | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Commercial real estate - owner occupied | Multi family | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Commercial real estate - owner occupied | Multi family | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 1,159,859 1,391,994
Commercial real estate - owner occupied | Other    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4,962,429 4,852,701
Commercial real estate - owner occupied | Other | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4,917,894 4,810,091
Commercial real estate - owner occupied | Other | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 44,535 42,610
Commercial real estate - owner occupied | Other | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 661 11,595
Commercial real estate - owner occupied | Other | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 0 0
Commercial real estate - owner occupied | Other | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 4,917,233 4,798,496
Consumer | Consumer    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 99,172 107,900
Consumer | Consumer | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 99,013 107,757
Consumer | Consumer | Nonaccruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 159 143
Consumer | Consumer | 30-89 Days Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 570 879
Consumer | Consumer | 90 Days or More Past Due | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 25 14
Consumer | Consumer | Current Loans | Accruing Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income $ 98,418 $ 106,864