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Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | $ 18,975,248 | $ 19,047,039
Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 18,777,733 | 18,871,309
Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 197,515 | 175,730
30-89 Days Past Due | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 68,597 | 89,162
90 Days or More Past Due | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 2,779 | 288
Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 18,706,357 | 18,781,859
Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 2,895,477 | 2,818,326
Commercial and industrial | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 2,849,365 | 2,790,433
Commercial and industrial | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 46,112 | 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 | 2,950 | 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 | 981 | 109
Commercial and industrial | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 2,845,434 | 2,783,744
Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,898,629 | 1,905,636
Construction and land development | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,886,695 | 1,898,064
Construction and land development | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 11,934 | 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 | 111 | 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 | 390 | 158
Construction and land development | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,886,194 | 1,897,171
Construction and land development | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 425,543 | 382,773
Construction and land development | Residential | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 423,552 | 380,740
Construction and land development | Residential | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,991 | 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 | 0 | 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 | 423,552 | 380,681
Construction and land development | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,473,086 | 1,522,863
Construction and land development | Other | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,463,143 | 1,517,324
Construction and land development | Other | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 9,943 | 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 | 111 | 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 | 390 | 158
Construction and land development | Other | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,462,642 | 1,516,490
Real Estate - 1-4 Family Mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,584,118 | 4,635,033
Real Estate - 1-4 Family Mortgage | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,523,147 | 4,569,609
Real Estate - 1-4 Family Mortgage | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 60,971 | 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 | 53,143 | 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 | 341 | 7
Real Estate - 1-4 Family Mortgage | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,469,663 | 4,509,338
Real Estate - 1-4 Family Mortgage | First lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 3,792,685 | 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 | 3,736,769 | 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 | 55,916 | 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 | 49,518 | 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 | 341 | 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 | 3,686,910 | 3,727,587
Real Estate - 1-4 Family Mortgage | Junior lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 52,516 | 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 | 51,385 | 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 | 1,131 | 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 | 474 | 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 | 50,911 | 50,717
Real Estate - 1-4 Family Mortgage | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 738,917 | 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 | 734,993 | 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 | 3,924 | 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 | 3,151 | 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 | 731,842 | 731,034
Commercial real estate - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 6,135,543 | 6,245,480
Commercial real estate - owner occupied | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 6,086,668 | 6,202,085
Commercial real estate - owner occupied | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 48,875 | 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 | 6,252 | 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 | 1,054 | 0
Commercial real estate - owner occupied | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 6,079,362 | 6,190,490
Commercial real estate - owner occupied | Owner-occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 3,357,965 | 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 | 3,328,532 | 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 | 29,433 | 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 | 5,586 | 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 | 3,322,946 | 3,294,252
Commercial real estate - owner occupied | Multi family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 1,278,646 | 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 | 1,277,877 | 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 | 769 | 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 | 1,413 | 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 | 489 | 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 | 1,275,975 | 1,391,994
Commercial real estate - owner occupied | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,856,897 | 4,852,701
Commercial real estate - owner occupied | Other | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,808,791 | 4,810,091
Commercial real estate - owner occupied | Other | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 48,106 | 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 | 4,839 | 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 | 565 | 0
Commercial real estate - owner occupied | Other | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 4,803,387 | 4,798,496
Consumer | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 103,516 | 107,900
Consumer | Consumer | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 103,326 | 107,757
Consumer | Consumer | Nonaccruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 190 | 143
Consumer | Consumer | 30-89 Days Past Due | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 555 | 879
Consumer | Consumer | 90 Days or More Past Due | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | 13 | 14
Consumer | Consumer | Current Loans | Accruing Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, net of unearned income | $ 102,758 | $ 106,864

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