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Allowance for Credit Losses (By Loan Class) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | $ 125,972 | $ 110,374 | $ 109,059
Losses charged to allowance | (10,184) | (9,479) | (9,024)
Recoveries credited to allowance | 6,705 | 3,426 | 2,384
Net losses charged to allowance | (3,479) | (6,053) | (6,640)
Provision (credit) charged to operations | 34,576 | 21,651 | 7,955
Balance at the end of the period | 157,069 | 125,972 | 110,374
Commercial, financial and agricultural | Domestic | Commercial. |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 26,728 | 23,178 | 21,908
Losses charged to allowance | (9,664) | (9,050) | (8,083)
Recoveries credited to allowance | 5,433 | 2,894 | 1,943
Net losses charged to allowance | (4,231) | (6,156) | (6,140)
Provision (credit) charged to operations | 13,053 | 9,706 | 7,410
Balance at the end of the period | 35,550 | 26,728 | 23,178
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 36,474 | 35,654 | 30,000
Losses charged to allowance |  | (16) | (364)
Recoveries credited to allowance | 143 | 27 | 171
Net losses charged to allowance | 143 | 11 | (193)
Provision (credit) charged to operations | 6,086 | 809 | 5,847
Balance at the end of the period | 42,703 | 36,474 | 35,654
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 3,794 | 3,291 | 5,051
Provision (credit) charged to operations | 1,294 | 503 | (1,760)
Balance at the end of the period | 5,088 | 3,794 | 3,291
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 44,684 | 35,390 | 37,612
Losses charged to allowance |  | (2) | (2)
Recoveries credited to allowance | 837 | 123 |
Net losses charged to allowance | 837 | 121 | (2)
Provision (credit) charged to operations | 9,770 | 9,173 | (2,220)
Balance at the end of the period | 55,291 | 44,684 | 35,390
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 | 4,759 | 4,073 | 3,874
Losses charged to allowance | (43) | (160) | (373)
Recoveries credited to allowance | 16 | 240 | 60
Net losses charged to allowance | (27) | 80 | (313)
Provision (credit) charged to operations | 1,080 | 606 | 512
Balance at the end of the period | 5,812 | 4,759 | 4,073
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 | 8,284 | 7,754 | 9,570
Losses charged to allowance | (298) | (28) | (25)
Recoveries credited to allowance | 260 | 104 | 164
Net losses charged to allowance | (38) | 76 | 139
Provision (credit) charged to operations | 2,778 | 454 | (1,955)
Balance at the end of the period | 11,024 | 8,284 | 7,754
Consumer | Domestic |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 281 | 272 | 291
Losses charged to allowance | (179) | (223) | (176)
Recoveries credited to allowance | 16 | 38 | 46
Net losses charged to allowance | (163) | (185) | (130)
Provision (credit) charged to operations | 200 | 194 | 111
Balance at the end of the period | 318 | 281 | 272
Foreign. | Foreign |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at the beginning of the period | 968 | 762 | 753
Losses charged to allowance |  |  | (1)
Net losses charged to allowance |  |  | (1)
Provision (credit) charged to operations | 315 | 206 | 10
Balance at the end of the period | $ 1,283 | $ 968 | $ 762

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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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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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