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LHFI and ACL, LHFI - Aging Analysis of Past Due and Nonaccrual LHFI by Loan Type (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | $ 13,464,780 | $ 13,089,942
Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 27,647 | 30,456
Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 10,700 | 23,279
Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 55,435 | 37,528
Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 93,782 | 91,263
Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 13,370,998 | 12,998,679
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 560,913 | 587,244
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 888 | 199
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 30 | 0
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 105 | 324
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,023 | 523
Construction, Land Development and Other Land [Member] | Loans Secured by Real Estate [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 559,890 | 586,721
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 689,089 | 650,550
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 5,515 | 5,656
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 3,025 | 1,821
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,991 | 3,223
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 11,531 | 10,700
Other Secured by 1-4 Family Residential Properties [Member] | Loans Secured by Real Estate [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 677,558 | 639,850
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,368,273 | 2,298,993
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 17,853 | 17,898
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 6,654 | 7,111
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 28,671 | 21,524
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 53,178 | 46,533
Secured by 1-4 Family Residential Properties [Member] | Other Loans Secured by Real Estate [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,315,095 | 2,252,460
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 3,478,932 | 3,533,282
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 732 | 1,488
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 105 | 380
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 3,029 | 3,111
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 3,866 | 4,979
Secured by Nonfarm, Nonresidential Properties [Member] | Loans Secured by Real Estate [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 3,475,066 | 3,528,303
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,918,341 | 1,633,830
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 221 | 1,979
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 64 | 0
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 298 | 28
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 583 | 2,007
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,917,758 | 1,631,823
Commercial and Industrial Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,832,295 | 1,840,722
Commercial and Industrial Loans [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,146 | 1,114
Commercial and Industrial Loans [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 317 | 13,300
Commercial and Industrial Loans [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 19,944 | 8,835
Commercial and Industrial Loans [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 21,407 | 23,249
Commercial and Industrial Loans [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,810,888 | 1,817,473
Other Construction Financing Receivable [Member] | Other Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 794,310 | 829,904
Other Construction Financing Receivable [Member] | Other Loans Secured by Real Estate [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 0
Other Construction Financing Receivable [Member] | Other Loans Secured by Real Estate [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 0
Other Construction Financing Receivable [Member] | Other Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 0
Other Construction Financing Receivable [Member] | Other Loans Secured by Real Estate [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 0
Other Construction Financing Receivable [Member] | Other Loans Secured by Real Estate [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 794,310 | 829,904
Consumer Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 152,921 | 156,569
Consumer Loans [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,202 | 1,930
Consumer Loans [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 486 | 600
Consumer Loans [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 397 | 414
Consumer Loans [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,085 | 2,944
Consumer Loans [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 150,836 | 153,625
State and Other Political Subdivision Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 961,251 | 969,836
State and Other Political Subdivision Loans [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 24
State and Other Political Subdivision Loans [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 0
State and Other Political Subdivision Loans [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 0
State and Other Political Subdivision Loans [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 24
State and Other Political Subdivision Loans [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 961,251 | 969,812
Other Commercial Loans and Leases [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 708,455 | 589,012
Other Commercial Loans and Leases [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 90 | 168
Other Commercial Loans and Leases [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 19 | 67
Other Commercial Loans and Leases [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 0 | 69
Other Commercial Loans and Leases [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 109 | 304
Other Commercial Loans and Leases [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | $ 708,346 | $ 588,708

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