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Allowance for Credit Losses (Portfolio Credit Quality) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loan portfolio by credit quality indicator |  |
2020 | $ 3,601,680 |
2019 | 1,627,511 |
2018 | 1,087,031 |
2017 | 556,923 |
2016 | 327,336 |
Prior | 341,273 |
Total loans | 7,541,754 | $ 6,894,946
Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 6,538,085
Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 33,553
Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 62,315
Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 248,318
Domestic | Commercial Loan [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 1,288,332 |
2019 | 241,724 |
2018 | 146,051 |
2017 | 85,596 |
2016 | 14,216 |
Prior | 10,017 |
Total loans | 1,785,936 |
Domestic | Commercial Loan [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 1,168,671 |
2019 | 240,869 |
2018 | 145,670 |
2017 | 85,434 |
2016 | 13,901 |
Prior | 10,000 |
Total loans | 1,664,545 | 1,228,110
Domestic | Commercial Loan [Member] | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 75,638 |
Total loans | 75,638 | 569
Domestic | Commercial Loan [Member] | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 39,886 |
2019 | 11 |
2017 | 3 |
Prior | 17 |
Total loans | 39,917 | 39
Domestic | Commercial Loan [Member] | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 3,360 |
2019 | 683 |
2018 | 289 |
2016 | 315 |
Total loans | 4,647 | 62,007
Domestic | Commercial Loan [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2020 | 777 |
2019 | 161 |
2018 | 92 |
2017 | 159 |
Total loans | 1,189 |
Domestic | Commercial Real Estate: other construction and land development |  |
Loan portfolio by credit quality indicator |  |
2020 | 833,796 |
2019 | 600,602 |
2018 | 320,308 |
2017 | 78,174 |
2016 | 10,534 |
Prior | 3,343 |
Total loans | 1,846,757 |
Domestic | Commercial Real Estate: other construction and land development | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 773,165 |
2019 | 576,707 |
2018 | 320,308 |
2017 | 78,174 |
2016 | 10,534 |
Prior | 3,343 |
Total loans | 1,762,231 |
Domestic | Commercial Real Estate: other construction and land development | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 20,828 |
2019 | 21,650 |
Total loans | 42,478 |
Domestic | Commercial Real Estate: other construction and land development | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 23,101 |
2019 | 1,451 |
Total loans | 24,552 |
Domestic | Commercial Real Estate: other construction and land development | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2020 | 16,702 |
2019 | 794 |
Total loans | 17,496 |
Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 1,002,557 |
2019 | 380,123 |
2018 | 391,303 |
2017 | 192,165 |
2016 | 206,193 |
Prior | 116,967 |
Total loans | 2,289,308 |
Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 884,070 |
2019 | 373,993 |
2018 | 386,268 |
2017 | 189,639 |
2016 | 202,500 |
Prior | 116,729 |
Total loans | 2,153,199 | 1,710,446
Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 3,041 |
2018 | 4,758 |
2017 | 177 |
2016 | 3,218 |
Total loans | 11,194 | 13,184
Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 61,637 |
2019 | 942 |
2018 | 277 |
2017 | 80 |
Total loans | 62,936 | 20,183
Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 53,809 |
2019 | 4,986 |
2017 | 2,269 |
2016 | 475 |
Prior | 1 |
Total loans | 61,540 | 151,726
Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2019 | 202 |
Prior | 237 |
Total loans | 439 |
Domestic | Commercial Real Estate Multifamily Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 74,711 |
2019 | 208,356 |
2018 | 82,818 |
2017 | 64,110 |
2016 | 6,801 |
Prior | 4,248 |
Total loans | 441,044 |
Domestic | Commercial Real Estate Multifamily Receivable [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 74,577 |
2019 | 208,356 |
2018 | 82,818 |
2017 | 64,110 |
2016 | 6,801 |
Prior | 4,248 |
Total loans | 440,910 | 190,265
Domestic | Commercial Real Estate Multifamily Receivable [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2020 | 134 |
Total loans | 134 |
Domestic | Residential First Mortgage Financing Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 81,090 |
2019 | 62,179 |
2018 | 72,430 |
2017 | 54,593 |
2016 | 29,299 |
Prior | 105,528 |
Total loans | 405,119 |
Domestic | Residential First Mortgage Financing Receivable [Member] | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 81,004 |
2019 | 62,165 |
2018 | 72,299 |
2017 | 54,593 |
2016 | 29,250 |
Prior | 105,463 |
Total loans | 404,774 | 426,546
Domestic | Residential First Mortgage Financing Receivable [Member] | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 253
Domestic | Residential First Mortgage Financing Receivable [Member] | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2019 | 14 |
2018 | 131 |
Total loans | 145 | 144
Domestic | Residential First Mortgage Financing Receivable [Member] | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
2016 | 49 |
Total loans | 49 | 680
Domestic | Residential First Mortgage Financing Receivable [Member] | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2020 | 86 |
Prior | 65 |
Total loans | 151 |
Domestic | Residential Junior Lien |  |
Loan portfolio by credit quality indicator |  |
2020 | 197,048 |
2019 | 108,276 |
2018 | 61,674 |
2017 | 75,868 |
2016 | 56,705 |
Prior | 94,454 |
Total loans | 594,025 |
Domestic | Residential Junior Lien | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 196,308 |
2019 | 108,276 |
2018 | 61,636 |
2017 | 75,056 |
2016 | 56,705 |
Prior | 94,454 |
Total loans | 592,435 | 704,958
Domestic | Residential Junior Lien | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 740 |
2017 | 812 |
Total loans | 1,552 | 826
Domestic | Residential Junior Lien | Watch List - Doubtful |  |
Loan portfolio by credit quality indicator |  |
2018 | 38 |
Total loans | 38 |
Commercial, financial and agricultural |  |
Loan portfolio by credit quality indicator |  |
Total loans | 4,516,288 | 3,379,837
Commercial, financial and agricultural | Domestic | Commercial Loan [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans | 1,785,936 | 1,292,660
Commercial, financial and agricultural | Domestic | Commercial Real Estate Farmland and Commercial Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans | 2,289,308 | 1,896,747
Commercial, financial and agricultural | Domestic | Commercial Real Estate Multifamily Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans | 441,044 | 190,430
Commercial Real Estate Portfolio Segment [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans | 1,846,757 | 2,185,883
Commercial Real Estate Portfolio Segment [Member] | Domestic | Commercial Real Estate: other construction and land development |  |
Loan portfolio by credit quality indicator |  |
Total loans | 1,846,757 | 2,185,883
Commercial Real Estate Portfolio Segment [Member] | Domestic | Commercial Real Estate: other construction and land development | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 2,090,370
Commercial Real Estate Portfolio Segment [Member] | Domestic | Commercial Real Estate: other construction and land development | Special Mention [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 18,721
Commercial Real Estate Portfolio Segment [Member] | Domestic | Commercial Real Estate: other construction and land development | Special Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 41,949
Commercial Real Estate Portfolio Segment [Member] | Domestic | Commercial Real Estate: other construction and land development | Substandard [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans |  | 33,905
Real estate - mortgage |  |
Loan portfolio by credit quality indicator |  |
Total loans | 999,144 | 1,140,377
Real estate - mortgage | Domestic | Residential First Mortgage Financing Receivable [Member] |  |
Loan portfolio by credit quality indicator |  |
Total loans | 405,119 | 433,901
Real estate - mortgage | Domestic | Residential Junior Lien |  |
Loan portfolio by credit quality indicator |  |
Total loans | 594,025 | 706,476
Consumer |  |
Loan portfolio by credit quality indicator |  |
Total loans | 40,595 | 47,800
Consumer | Domestic |  |
Loan portfolio by credit quality indicator |  |
2020 | 30,910 |
2019 | 7,159 |
2018 | 875 |
2017 | 225 |
2016 | 55 |
Prior | 1,371 |
Total loans | 40,595 | 47,800
Consumer | Domestic | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 30,910 |
2019 | 7,159 |
2018 | 875 |
2017 | 225 |
2016 | 55 |
Prior | 1,371 |
Total loans | 40,595 | 46,605
Foreign |  |
Loan portfolio by credit quality indicator |  |
Total loans | 138,970 | 141,049
Foreign | Foreign |  |
Loan portfolio by credit quality indicator |  |
2020 | 93,236 |
2019 | 19,092 |
2018 | 11,572 |
2017 | 6,192 |
2016 | 3,533 |
Prior | 5,345 |
Total loans | 138,970 | 141,049
Foreign | Foreign | Pass [Member] |  |
Loan portfolio by credit quality indicator |  |
2020 | 93,236 |
2019 | 19,092 |
2018 | 11,572 |
2017 | 6,192 |
2016 | 3,533 |
Prior | 5,345 |
Total loans | $ 138,970 | $ 140,785

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