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Allowance for Credit Losses - By Loan Class (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | $ 157,069 | $ 125,972 | $ 110,374
Losses charged to allowance | (36,608) | (10,184) | (9,479)
Recoveries credited to allowance | 4,274 | 6,705 | 3,426
Net losses charged to allowance | (32,334) | (3,479) | (6,053)
Provision (credit) charged to operations | 31,802 | 34,576 | 21,651
Balance at the end of the period | 156,537 | 157,069 | 125,972
Commercial, financial and agricultural | Commercial |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Charge-down due to customer filing bankruptcy | 25,600 |  |
Commercial, financial and agricultural | Domestic | Commercial |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 35,550 | 26,728 | 23,178
Losses charged to allowance | (34,149) | (9,664) | (9,050)
Recoveries credited to allowance | 4,079 | 5,433 | 2,894
Net losses charged to allowance | (30,070) | (4,231) | (6,156)
Provision (credit) charged to operations | 24,373 | 13,053 | 9,706
Balance at the end of the period | 29,853 | 35,550 | 26,728
Commercial real estate | Domestic | Commercial real estate construction development |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 55,291 | 44,684 | 35,390
Losses charged to allowance | (2,228) |  | (2)
Recoveries credited to allowance |  | 837 | 123
Net losses charged to allowance | (2,228) | 837 | 121
Provision (credit) charged to operations | 7,576 | 9,770 | 9,173
Balance at the end of the period | 60,639 | 55,291 | 44,684
Commercial real estate | Domestic | Commercial real estate: farmland & commercial |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 42,703 | 36,474 | 35,654
Losses charged to allowance |  |  | (16)
Recoveries credited to allowance | 20 | 143 | 27
Net losses charged to allowance | 20 | 143 | 11
Provision (credit) charged to operations | 1,267 | 6,086 | 809
Balance at the end of the period | 43,990 | 42,703 | 36,474
Commercial real estate | Domestic | Commercial Real Estate Multifamily Receivable [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 5,088 | 3,794 | 3,291
Provision (credit) charged to operations | (219) | 1,294 | 503
Balance at the end of the period | 4,869 | 5,088 | 3,794
Real estate - mortgage | Domestic | Residential First Lien |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 5,812 | 4,759 | 4,073
Losses charged to allowance | (46) | (43) | (160)
Recoveries credited to allowance | 38 | 16 | 240
Net losses charged to allowance | (8) | (27) | 80
Provision (credit) charged to operations | (276) | 1,080 | 606
Balance at the end of the period | 5,528 | 5,812 | 4,759
Real estate - mortgage | Domestic | Residential Junior Lien |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 11,024 | 8,284 | 7,754
Losses charged to allowance |  | (298) | (28)
Recoveries credited to allowance | 123 | 260 | 104
Net losses charged to allowance | 123 | (38) | 76
Provision (credit) charged to operations | (1,116) | 2,778 | 454
Balance at the end of the period | 10,031 | 11,024 | 8,284
Consumer | Domestic |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 318 | 281 | 272
Losses charged to allowance | (185) | (179) | (223)
Recoveries credited to allowance | 13 | 16 | 38
Net losses charged to allowance | (172) | (163) | (185)
Provision (credit) charged to operations | 135 | 200 | 194
Balance at the end of the period | 281 | 318 | 281
Foreign | Foreign |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 1,283 | 968 | 762
Recoveries credited to allowance | 1 |  |
Net losses charged to allowance | 1 |  |
Provision (credit) charged to operations | 62 | 315 | 206
Balance at the end of the period | $ 1,346 | $ 1,283 | $ 968

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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