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Allowance for Credit Losses (Aging By Loan Class) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | $ 9,105 | $ 8,238
Past due | 33,372 | 38,258
Loans, current | 7,428,986 | 7,503,496
Total loans | 7,462,358 | 7,541,754
30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 16,426 | 9,307
60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 7,137 | 3,606
90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 9,809 | 25,345
Commercial, financial and agricultural |  |
Financing receivable recorded investment |  |
Total loans | 4,680,883 | 4,516,288
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 492 | 318
Past due | 5,367 | 3,603
Loans, current | 1,735,239 | 1,782,333
Total loans | 1,740,606 | 1,785,936
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 4,060 | 1,931
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 344 | 1,109
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 963 | 563
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 72 | 186
Past due | 6,930 | 2,840
Loans, current | 2,414,362 | 2,286,468
Total loans | 2,421,292 | 2,289,308
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 3,004 | 2,435
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 3,854 | 219
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 72 | 186
Commercial, financial and agricultural | Domestic | Commercial Real Estate Multifamily Receivable [Member] |  |
Financing receivable recorded investment |  |
Past due |  | 126
Loans, current | 518,985 | 440,918
Total loans | 518,985 | 441,044
Commercial, financial and agricultural | Domestic | Commercial Real Estate Multifamily Receivable [Member] | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due |  | 126
Real estate - construction |  |
Financing receivable recorded investment |  |
Total loans | 1,653,418 | 1,846,757
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 1 |
Past due | 1,652 | 18,500
Loans, current | 1,651,766 | 1,828,257
Total loans | 1,653,418 | 1,846,757
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 1,651 | 1,059
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due |  | 854
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 1 | 16,587
Real estate - mortgage |  |
Financing receivable recorded investment |  |
Total loans | 950,782 | 999,144
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 7,061 | 5,890
Past due | 11,425 | 9,490
Loans, current | 390,272 | 395,629
Total loans | 401,697 | 405,119
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 3,530 | 2,399
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 638 | 926
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 7,257 | 6,165
Real estate - mortgage | Domestic | Residential Junior Lien |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 915 | 1,197
Past due | 3,226 | 2,005
Loans, current | 545,859 | 592,020
Total loans | 549,085 | 594,025
Real estate - mortgage | Domestic | Residential Junior Lien | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 925 | 561
Real estate - mortgage | Domestic | Residential Junior Lien | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 1,349 | 247
Real estate - mortgage | Domestic | Residential Junior Lien | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 952 | 1,197
Consumer |  |
Financing receivable recorded investment |  |
Total loans | 39,743 | 40,595
Consumer | Domestic |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 31 | 79
Past due | 334 | 468
Loans, current | 39,409 | 40,127
Total loans | 39,743 | 40,595
Consumer | Domestic | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 289 | 318
Consumer | Domestic | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 14 | 71
Consumer | Domestic | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | 31 | 79
Foreign |  |
Financing receivable recorded investment |  |
Total loans | 137,532 | 138,970
Foreign | Foreign |  |
Financing receivable recorded investment |  |
Past due 90 days or Greater and Still Accruing | 533 | 568
Past due | 4,438 | 1,226
Loans, current | 133,094 | 137,744
Total loans | 137,532 | 138,970
Foreign | Foreign | 30 to 59 Days |  |
Financing receivable recorded investment |  |
Past due | 2,967 | 478
Foreign | Foreign | 60 to 89 Days |  |
Financing receivable recorded investment |  |
Past due | 938 | 180
Foreign | Foreign | 90 Days or Greater |  |
Financing receivable recorded investment |  |
Past due | $ 533 | $ 568

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