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Allowance for Credit Losses - Roll Forward Of the Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Allowance for credit losses: |  |  |  |  |
Beginning balance | $ 194,391 | $ 166,131 | $ 192,090 | $ 164,171 |
Charge-offs | (3,630) | (3,259) | (16,272) | (10,274) |
Recoveries | 1,697 | 1,684 | 5,706 | 5,511 |
Net (charge-offs) recoveries | (1,933) | (1,575) | (10,566) | (4,763) |
Provision for (recovery of) credit losses on loans | 5,315 | 9,800 | 16,275 | 13,300 |
Ending balance | 197,773 | 174,356 | 197,773 | 174,356 |
Individually evaluated | 13,657 | 7,083 | 13,657 | 7,083 |
Collectively evaluated | 184,116 | 167,273 | 184,116 | 167,273 |
Loans: |  |  |  |  |
Individually evaluated | 53,723 | 34,619 | 53,723 | 34,619 |
Collectively evaluated | 12,114,300 | 11,070,385 | 12,114,300 | 11,070,385 |
Loans, net of unearned income | 12,168,023 | 11,105,004 | 12,168,023 | 11,105,004 | $ 11,578,304
Nonaccruing loans with no allowance for credit losses | 24,845 | 11,026 | 24,845 | 11,026 |
Commercial, financial, agricultural |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance | 41,310 | 30,193 | 44,255 | 33,922 |
Charge-offs | (2,252) | (373) | (7,720) | (4,714) |
Recoveries | 690 | 415 | 2,689 | 1,982 |
Net (charge-offs) recoveries | (1,562) | 42 | (5,031) | (2,732) |
Provision for (recovery of) credit losses on loans | 4,696 | 268 | 5,246 | (2,335) |
Ending balance | 44,444 | 30,503 | 44,444 | 30,503 |
Individually evaluated | 11,194 | 4,064 | 11,194 | 4,064 |
Collectively evaluated | 33,250 | 26,439 | 33,250 | 26,439 |
Loans: |  |  |  |  |
Individually evaluated | 20,996 | 9,088 | 20,996 | 9,088 |
Collectively evaluated | 1,798,895 | 1,504,003 | 1,798,895 | 1,504,003 |
Loans, net of unearned income | 1,819,891 | 1,513,091 | 1,819,891 | 1,513,091 |
Nonaccruing loans with no allowance for credit losses | 1,987 | 429 | 1,987 | 429 |
Real estate – construction: |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance | 19,125 | 17,290 | 19,114 | 16,419 |
Charge-offs | 0 | 0 | (57) | 0 |
Recoveries | 48 | 0 | 48 | 0 |
Net (charge-offs) recoveries | 48 | 0 | (9) | 0 |
Provision for (recovery of) credit losses on loans | 483 | 1,454 | 551 | 2,325 |
Ending balance | 19,656 | 18,744 | 19,656 | 18,744 |
Individually evaluated | 0 | 0 | 0 | 0 |
Collectively evaluated | 19,656 | 18,744 | 19,656 | 18,744 |
Loans: |  |  |  |  |
Individually evaluated | 0 | 153 | 0 | 153 |
Collectively evaluated | 1,407,364 | 1,214,903 | 1,407,364 | 1,214,903 |
Loans, net of unearned income | 1,407,364 | 1,215,056 | 1,407,364 | 1,215,056 |
Nonaccruing loans with no allowance for credit losses | 0 | 153 | 0 | 153 |
Real estate – 1-4 family mortgage: |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance | 46,434 | 41,910 | 44,727 | 32,356 |
Charge-offs | (130) | (208) | (345) | (532) |
Recoveries | 181 | 378 | 375 | 725 |
Net (charge-offs) recoveries | 51 | 170 | 30 | 193 |
Provision for (recovery of) credit losses on loans | (686) | 1,452 | 1,042 | 10,983 |
Ending balance | 45,799 | 43,532 | 45,799 | 43,532 |
Individually evaluated | 77 | 0 | 77 | 0 |
Collectively evaluated | 45,722 | 43,532 | 45,722 | 43,532 |
Loans: |  |  |  |  |
Individually evaluated | 13,007 | 5,965 | 13,007 | 5,965 |
Collectively evaluated | 3,385,869 | 3,121,924 | 3,385,869 | 3,121,924 |
Loans, net of unearned income | 3,398,876 | 3,127,889 | 3,398,876 | 3,127,889 |
Nonaccruing loans with no allowance for credit losses | 11,441 | 5,809 | 11,441 | 5,809 |
Real estate – commercial mortgage: |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance | 75,667 | 64,373 | 71,798 | 68,940 |
Charge-offs | 0 | (1,956) | (5,512) | (2,670) |
Recoveries | 208 | 50 | 697 | 397 |
Net (charge-offs) recoveries | 208 | (1,906) | (4,815) | (2,273) |
Provision for (recovery of) credit losses on loans | (642) | 6,800 | 8,250 | 2,600 |
Ending balance | 75,233 | 69,267 | 75,233 | 69,267 |
Individually evaluated | 1,260 | 2,649 | 1,260 | 2,649 |
Collectively evaluated | 73,973 | 66,618 | 73,973 | 66,618 |
Loans: |  |  |  |  |
Individually evaluated | 18,403 | 19,043 | 18,403 | 19,043 |
Collectively evaluated | 5,294,763 | 4,997,622 | 5,294,763 | 4,997,622 |
Loans, net of unearned income | 5,313,166 | 5,016,665 | 5,313,166 | 5,016,665 |
Nonaccruing loans with no allowance for credit losses | 11,226 | 4,633 | 11,226 | 4,633 |
Lease financing |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance | 2,480 | 1,802 | 2,463 | 1,486 |
Charge-offs | (641) | 0 | (641) | (7) |
Recoveries | 2 | 113 | 13 | 136 |
Net (charge-offs) recoveries | (639) | 113 | (628) | 129 |
Provision for (recovery of) credit losses on loans | 1,514 | 399 | 1,520 | 699 |
Ending balance | 3,355 | 2,314 | 3,355 | 2,314 |
Individually evaluated | 856 | 0 | 856 | 0 |
Collectively evaluated | 2,499 | 2,314 | 2,499 | 2,314 |
Loans: |  |  |  |  |
Individually evaluated | 1,047 | 0 | 1,047 | 0 |
Collectively evaluated | 119,677 | 103,357 | 119,677 | 103,357 |
Loans, net of unearned income | 120,724 | 103,357 | 120,724 | 103,357 |
Nonaccruing loans with no allowance for credit losses | 191 | 0 | 191 | 0 |
Installment Loans to Individuals |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance | 9,375 | 10,563 | 9,733 | 11,048 |
Charge-offs | (607) | (722) | (1,997) | (2,351) |
Recoveries | 568 | 728 | 1,884 | 2,271 |
Net (charge-offs) recoveries | (39) | 6 | (113) | (80) |
Provision for (recovery of) credit losses on loans | (50) | (573) | (334) | (972) |
Ending balance | 9,286 | 9,996 | 9,286 | 9,996 |
Individually evaluated | 270 | 370 | 270 | 370 |
Collectively evaluated | 9,016 | 9,626 | 9,016 | 9,626 |
Loans: |  |  |  |  |
Individually evaluated | 270 | 370 | 270 | 370 |
Collectively evaluated | 107,732 | 128,576 | 107,732 | 128,576 |
Loans, net of unearned income | 108,002 | 128,946 | 108,002 | 128,946 |
Nonaccruing loans with no allowance for credit losses | $ 0 | $ 2 | 0 | 2 |
Cumulative Effect, Period Of Adoption, Adjustment |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | (26) | 1,648 |
Cumulative Effect, Period Of Adoption, Adjustment | Commercial, financial, agricultural |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | (26) | 1,648 |
Cumulative Effect, Period Of Adoption, Adjustment | Real estate – construction: |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | 0 | 0 |
Cumulative Effect, Period Of Adoption, Adjustment | Real estate – 1-4 family mortgage: |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | 0 | 0 |
Cumulative Effect, Period Of Adoption, Adjustment | Real estate – commercial mortgage: |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | 0 | 0 |
Cumulative Effect, Period Of Adoption, Adjustment | Lease financing |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | 0 | 0 |
Cumulative Effect, Period Of Adoption, Adjustment | Installment Loans to Individuals |  |  |  |  |
Allowance for credit losses: |  |  |  |  |
Beginning balance |  |  | $ 0 | $ 0 |

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