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LHFI and ACL, LHFI - Aging Analysis of Past Due and Nonaccrual LHFI by Loan Type (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | $ 13,674,233 | $ 13,089,942
Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 33,490 | 30,456
Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 10,671 | 23,279
Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 45,313 | 37,528
Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 89,474 | 91,263
Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 13,584,759 | 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 | 549,353 | 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 | 786 | 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 | 139 | 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 | 0 | 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 | 925 | 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 | 548,428 | 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 | 704,514 | 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 | 6,118 | 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 | 1,238 | 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 | 3,868 | 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 | 11,224 | 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 | 693,290 | 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 | 2,351,675 | 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 | 19,838 | 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 | 8,340 | 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 | 34,838 | 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 | 63,016 | 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 | 2,288,659 | 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 | 3,304,523 | 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 | 1,798 | 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 | 185 | 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 | 3,829 | 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 | 5,812 | 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 | 3,298,711 | 3,528,303
Other Real Estate Secured [Member] | Loans Secured by Real Estate [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,124,272 | 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 | 1 | 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 | 0 | 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 | 316 | 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 | 317 | 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 | 2,123,955 | 1,631,823
Commercial and Industrial Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,999,464 | 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 | 2,828 | 1,114
Commercial and Industrial Loans [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 352 | 13,300
Commercial and Industrial Loans [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,014 | 8,835
Commercial and Industrial Loans [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 4,194 | 23,249
Commercial and Industrial Loans [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,995,270 | 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 | 595,238 | 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 | 595,238 | 829,904
Consumer Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 163,754 | 156,569
Consumer Loans [Member] | Past Due 30 to 59 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,109 | 1,930
Consumer Loans [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 402 | 600
Consumer Loans [Member] | Past Due 90 Days or More [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 453 | 414
Consumer Loans [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 2,964 | 2,944
Consumer Loans [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 160,790 | 153,625
State and Other Political Subdivision Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,061,584 | 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 | 8 | 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 | 995 | 0
State and Other Political Subdivision Loans [Member] | Financial Asset, Past Due [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,003 | 24
State and Other Political Subdivision Loans [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 1,060,581 | 969,812
Other Commercial Loans and Leases [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 819,856 | 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 | 4 | 168
Other Commercial Loans and Leases [Member] | Past Due 60 to 89 Days [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | 15 | 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 | 19 | 304
Other Commercial Loans and Leases [Member] | Current Loans [Member] |  |
Financing Receivable Allowance For Credit Losses [Line Items] |  |
Total LHFI | $ 819,837 | $ 588,708

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