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Allowance for Credit Losses (Portfolio Credit Quality) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Loan portfolio by credit quality indicator |  |
2021 | $ 836,952 | $ 3,601,680
2020 | 3,010,552 | 1,627,511
2019 | 1,533,431 | 1,087,031
2018 | 999,919 | 556,923
2017 | 495,275 | 327,336
Prior | 586,229 | 341,273
Total loans | 7,462,358 | 7,541,754
Commercial, financial and agricultural |  |
Loan portfolio by credit quality indicator |  |
Total loans | 4,680,883 | 4,516,288
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 311,973 | 1,288,332
2020 | 974,852 | 241,724
2019 | 216,152 | 146,051
2018 | 140,849 | 85,596
2017 | 77,562 | 14,216
Prior | 19,218 | 10,017
Total loans | 1,740,606 | 1,785,936
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 307,767 | 1,168,671
2020 | 862,330 | 240,869
2019 | 215,227 | 145,670
2018 | 140,577 | 85,434
2017 | 77,456 | 13,901
Prior | 18,898 | 10,000
Total loans | 1,622,255 | 1,664,545
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 1,179 | 75,638
2020 | 74,698 |
Total loans | 75,877 | 75,638
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 39,886
2020 | 37,037 | 11
2018 |  | 3
2017 | 3 |
Prior | 14 | 17
Total loans | 37,054 | 39,917
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 3,027 | 3,360
2020 | 310 | 683
2019 | 920 | 289
2018 | 108 |
2017 |  | 315
Total loans | 4,365 | 4,647
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 777
2020 | 477 | 161
2019 | 5 | 92
2018 | 164 | 159
2017 | 103 |
Prior | 306 |
Total loans | 1,055 | 1,189
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 241,123 | 1,002,557
2020 | 876,622 | 380,123
2019 | 361,646 | 391,303
2018 | 462,703 | 192,165
2017 | 178,708 | 206,193
Prior | 300,490 | 116,967
Total loans | 2,421,292 | 2,289,308
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 221,824 | 884,070
2020 | 776,277 | 373,993
2019 | 355,776 | 386,268
2018 | 457,828 | 189,639
2017 | 176,206 | 202,500
Prior | 296,816 | 116,729
Total loans | 2,284,727 | 2,153,199
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 2,070 | 3,041
2020 | 1,357 |
2019 | 931 | 4,758
2018 | 4,598 | 177
2017 | 161 | 3,218
Prior | 3,203 |
Total loans | 12,320 | 11,194
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 17,229 | 61,637
2020 | 44,351 | 942
2019 |  | 277
2018 | 277 | 80
2017 | 96 |
Total loans | 61,953 | 62,936
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 53,809
2020 | 54,409 | 4,986
2019 | 4,745 |
2018 |  | 2,269
2017 | 2,245 | 475
Prior | 471 | 1
Total loans | 61,870 | 61,540
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2020 | 228 | 202
2019 | 194 |
Prior |  | 237
Total loans | 422 | 439
Commercial, financial and agricultural | Domestic | Commercial Real Estate Multifamily Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 17,769 | 74,711
2020 | 96,173 | 208,356
2019 | 216,507 | 82,818
2018 | 115,126 | 64,110
2017 | 63,659 | 6,801
Prior | 9,751 | 4,248
Total loans | 518,985 | 441,044
Commercial, financial and agricultural | Domestic | Commercial Real Estate Multifamily Receivable [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 17,769 | 74,577
2020 | 96,046 | 208,356
2019 | 216,507 | 82,818
2018 | 115,126 | 64,110
2017 | 63,659 | 6,801
Prior | 9,751 | 4,248
Total loans | 518,858 | 440,910
Commercial, financial and agricultural | Domestic | Commercial Real Estate Multifamily Receivable [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 134
2020 | 127 |
Total loans | 127 | 134
Real estate - construction |  |
Loan portfolio by credit quality indicator |  |
Total loans | 1,653,418 | 1,846,757
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development |  |
Loan portfolio by credit quality indicator |  |
2021 | 170,443 | 833,796
2020 | 697,177 | 600,602
2019 | 548,745 | 320,308
2018 | 157,522 | 78,174
2017 | 67,581 | 10,534
Prior | 11,950 | 3,343
Total loans | 1,653,418 | 1,846,757
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 140,264 | 773,165
2020 | 673,184 | 576,707
2019 | 548,745 | 320,308
2018 | 157,473 | 78,174
2017 | 67,581 | 10,534
Prior | 11,950 | 3,343
Total loans | 1,599,197 | 1,762,231
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 30,179 | 20,828
2020 |  | 21,650
Total loans | 30,179 | 42,478
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 23,101
2020 | 23,101 | 1,451
2018 | 49 |
Total loans | 23,150 | 24,552
Real estate - construction | Domestic | Commercial Real Estate: other construction and land development | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 16,702
2020 | 892 | 794
Total loans | 892 | 17,496
Real estate - mortgage |  |
Loan portfolio by credit quality indicator |  |
Total loans | 950,782 | 999,144
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 41,581 | 81,090
2020 | 74,045 | 62,179
2019 | 76,843 | 72,430
2018 | 61,176 | 54,593
2017 | 37,745 | 29,299
Prior | 110,307 | 105,528
Total loans | 401,697 | 405,119
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 41,581 | 81,004
2020 | 73,963 | 62,165
2019 | 76,843 | 72,299
2018 | 61,176 | 54,593
2017 | 37,745 | 29,250
Prior | 110,193 | 105,463
Total loans | 401,501 | 404,774
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 |  | 14
2019 |  | 131
Total loans |  | 145
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
2017 |  | 49
Prior | 49 |
Total loans | 49 | 49
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 86
2020 | 82 |
Prior | 65 | 65
Total loans | 147 | 151
Real estate - mortgage | Domestic | Residential Junior Lien |  |
Loan portfolio by credit quality indicator |  |
2021 | 28,850 | 197,048
2020 | 182,697 | 108,276
2019 | 96,296 | 61,674
2018 | 51,261 | 75,868
2017 | 64,054 | 56,705
Prior | 125,927 | 94,454
Total loans | 549,085 | 594,025
Real estate - mortgage | Domestic | Residential Junior Lien | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 28,850 | 196,308
2020 | 181,957 | 108,276
2019 | 96,296 | 61,636
2018 | 51,223 | 75,056
2017 | 63,242 | 56,705
Prior | 125,927 | 94,454
Total loans | 547,495 | 592,435
Real estate - mortgage | Domestic | Residential Junior Lien | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 |  | 740
2020 | 740 |
2018 |  | 812
2017 | 812 |
Total loans | 1,552 | 1,552
Real estate - mortgage | Domestic | Residential Junior Lien | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2019 |  | 38
2018 | 38 |
Total loans | 38 | 38
Consumer |  |
Loan portfolio by credit quality indicator |  |
Total loans | 39,743 | 40,595
Consumer | Domestic |  |
Loan portfolio by credit quality indicator |  |
2021 | 8,044 | 30,910
2020 | 24,735 | 7,159
2019 | 4,683 | 875
2018 | 598 | 225
2017 | 156 | 55
Prior | 1,527 | 1,371
Total loans | 39,743 | 40,595
Consumer | Domestic | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 8,044 | 30,910
2020 | 24,735 | 7,159
2019 | 4,683 | 875
2018 | 598 | 225
2017 | 156 | 55
Prior | 1,527 | 1,371
Total loans | 39,743 | 40,595
Foreign |  |
Loan portfolio by credit quality indicator |  |
Total loans | 137,532 | 138,970
Foreign | Foreign |  |
Loan portfolio by credit quality indicator |  |
2021 | 17,169 | 93,236
2020 | 84,251 | 19,092
2019 | 12,559 | 11,572
2018 | 10,684 | 6,192
2017 | 5,810 | 3,533
Prior | 7,059 | 5,345
Total loans | 137,532 | 138,970
Foreign | Foreign | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2021 | 17,169 | 93,236
2020 | 84,251 | 19,092
2019 | 12,559 | 11,572
2018 | 10,684 | 6,192
2017 | 5,810 | 3,533
Prior | 7,059 | 5,345
Total loans | $ 137,532 | $ 138,970

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