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Allowance for Credit Losses (By Loan Class) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | $ 110,227 | $ 108,408 | $ 110,374 | $ 109,059
Losses charged to allowance | (2,092) | (1,848) | (4,421) | (4,201)
Recoveries credited to allowance | 702 | 577 | 1,403 | 1,087
Net (losses) recoveries charged to allowance | (1,390) | (1,271) | (3,018) | (3,114)
Credit loss expense | 3,735 | 1,144 | 5,216 | 2,336
Balance at the end of the period | 112,572 | 108,281 | 112,572 | 108,281
Commercial, financial and agricultural | Domestic | Commercial. |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 23,901 | 22,163 | 23,178 | 21,908
Losses charged to allowance | (2,001) | (1,655) | (4,113) | (3,548)
Recoveries credited to allowance | 508 | 498 | 1,110 | 956
Net (losses) recoveries charged to allowance | (1,493) | (1,157) | (3,003) | (2,592)
Credit loss expense | 3,169 | 2,057 | 5,402 | 3,747
Balance at the end of the period | 25,577 | 23,063 | 25,577 | 23,063
Commercial, financial and agricultural | Domestic | Commercial real estate: farmland & commercial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 34,854 | 32,203 | 35,654 | 30,000
Losses charged to allowance |  |  |  | (356)
Recoveries credited to allowance | 6 | 7 | 14 | 19
Net (losses) recoveries charged to allowance | 6 | 7 | 14 | (337)
Credit loss expense | 410 | 2,028 | (398) | 4,575
Balance at the end of the period | 35,270 | 34,238 | 35,270 | 34,238
Commercial, financial and agricultural | Domestic | Commercial real estate: multifamily |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 3,062 | 5,935 | 3,291 | 5,051
Credit loss expense | (206) | (1,729) | (435) | (845)
Balance at the end of the period | 2,856 | 4,206 | 2,856 | 4,206
Obligations of states and political subdivisions | Domestic | Commercial Real Estate: other construction and land development |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 36,372 | 34,406 | 35,390 | 37,612
Losses charged to allowance |  |  | (2) |
Recoveries credited to allowance | 1 |  | 3 |
Net (losses) recoveries charged to allowance | 1 |  | 1 |
Credit loss expense | 340 | (803) | 1,322 | (4,009)
Balance at the end of the period | 36,713 | 33,603 | 36,713 | 33,603
Real estate - mortgage | Domestic | Residential: first lien |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 4,016 | 3,917 | 4,073 | 3,874
Losses charged to allowance | (57) | (117) | (156) | (189)
Recoveries credited to allowance | 168 | 24 | 198 | 35
Net (losses) recoveries charged to allowance | 111 | (93) | 42 | (154)
Credit loss expense | 10 | 92 | 22 | 196
Balance at the end of the period | 4,137 | 3,916 | 4,137 | 3,916
Real estate - mortgage | Domestic | Residential Junior Lien |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 7,046 | 8,736 | 7,754 | 9,570
Losses charged to allowance |  | (21) | (28) | (21)
Recoveries credited to allowance | 14 | 37 | 62 | 58
Net (losses) recoveries charged to allowance | 14 | 16 | 34 | 37
Credit loss expense | (166) | (556) | (894) | (1,411)
Balance at the end of the period | 6,894 | 8,196 | 6,894 | 8,196
Consumer | Domestic |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 264 | 279 | 272 | 291
Losses charged to allowance | (34) | (55) | (122) | (87)
Recoveries credited to allowance | 5 | 11 | 16 | 19
Net (losses) recoveries charged to allowance | (29) | (44) | (106) | (68)
Credit loss expense | 35 | 33 | 104 | 45
Balance at the end of the period | 270 | 268 | 270 | 268
Foreign. | Foreign |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Balance at the beginning of the period | 712 | 769 | 762 | 753
Credit loss expense | 143 | 22 | 93 | 38
Balance at the end of the period | $ 855 | $ 791 | $ 855 | $ 791

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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (4) + Details
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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) + Details
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- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
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