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Loans and Lease Finance Receivables and Allowance for Credit Losses - Summary of loans by type and origination year, according to our internal risk ratings (Detail) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | $ 1,915,829 |
2019 | 974,518 |
2018 | 881,124 |
2017 | 911,758 |
2016 | 724,436 |
Prior | 2,120,664 |
Revolving loans amortized cost basis | 822,289 |
Revolving loans converted to term loans | 57,254 |
Total | 8,407,872 | $ 7,568,319
Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 86,025 |
2019 | 172,084 |
2018 | 76,932 |
2017 | 65,547 |
2016 | 42,549 |
Prior | 85,692 |
Revolving loans amortized cost basis | 277,849 |
Revolving loans converted to term loans | 10,378 |
Total | 817,056 |
Commercial Trade Financing [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 37,389 |
2019 | 13,394 |
2018 | 47,148 |
2017 | 75,776 |
2016 | 29,585 |
Prior | 98,822 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 2,873 |
Total | 304,987 |
SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,101,142 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 1,101,142 |
Real Estate Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 621,687 |
2019 | 713,566 |
2018 | 702,980 |
2017 | 711,783 |
2016 | 604,699 |
Prior | 1,840,177 |
Revolving loans amortized cost basis | 206,705 |
Revolving loans converted to term loans | 26,626 |
Total | 5,428,223 |
Construction Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 11,160 |
2019 | 8,614 |
2018 | 14,399 |
2017 | 15,667 |
2016 | 10,592 |
Prior | 4 |
Revolving loans amortized cost basis | 41,467 |
Revolving loans converted to term loans | 0 |
Total | 101,903 |
Consumer Mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 52,065 |
2019 | 62,325 |
2018 | 33,614 |
2017 | 25,069 |
2016 | 28,573 |
Prior | 72,645 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 440 |
Total | 274,731 |
Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 755 |
2019 | 2,201 |
2018 | 2,524 |
2017 | 6,412 |
2016 | 3,137 |
Prior | 341 |
Revolving loans amortized cost basis | 223,030 |
Revolving loans converted to term loans | 14,402 |
Total | 252,802 |
Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 123 |
2019 | 0 |
2018 | 2,556 |
2017 | 10,436 |
2016 | 3,587 |
Prior | 21,338 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 38,040 | 53,146
Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 5,483 |
2019 | 2,334 |
2018 | 971 |
2017 | 1,068 |
2016 | 1,714 |
Prior | 1,645 |
Revolving loans amortized cost basis | 73,238 |
Revolving loans converted to term loans | 2,535 |
Total | 88,988 |
Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,906,637 |
2019 | 961,016 |
2018 | 852,750 |
2017 | 878,051 |
2016 | 702,489 |
Prior | 2,037,779 |
Revolving loans amortized cost basis | 781,006 |
Revolving loans converted to term loans | 39,843 |
Total | 8,159,571 | 7,321,402
Pass [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 81,480 |
2019 | 170,738 |
2018 | 72,345 |
2017 | 62,918 |
2016 | 41,860 |
Prior | 80,669 |
Revolving loans amortized cost basis | 255,407 |
Revolving loans converted to term loans | 8,153 |
Total | 773,570 |
Pass [Member] | Commercial Trade Financing [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 37,389 |
2019 | 13,394 |
2018 | 46,193 |
2017 | 72,665 |
2016 | 26,687 |
Prior | 88,255 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 2,873 |
Total | 287,456 |
Pass [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,101,142 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 1,101,142 |
Pass [Member] | Real Estate Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 617,068 |
2019 | 701,648 |
2018 | 680,997 |
2017 | 684,519 |
2016 | 589,553 |
Prior | 1,776,989 |
Revolving loans amortized cost basis | 201,021 |
Revolving loans converted to term loans | 26,329 |
Total | 5,278,124 |
Pass [Member] | Construction Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 11,160 |
2019 | 8,614 |
2018 | 14,399 |
2017 | 15,667 |
2016 | 10,592 |
Prior | 4 |
Revolving loans amortized cost basis | 41,467 |
Revolving loans converted to term loans | 0 |
Total | 101,903 |
Pass [Member] | Consumer Mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 52,050 |
2019 | 62,087 |
2018 | 33,614 |
2017 | 25,069 |
2016 | 28,344 |
Prior | 69,215 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 270,379 |
Pass [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 742 |
2019 | 2,201 |
2018 | 1,675 |
2017 | 5,709 |
2016 | 152 |
Prior | 341 |
Revolving loans amortized cost basis | 210,610 |
Revolving loans converted to term loans | 494 |
Total | 221,924 |
Pass [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 123 |
2019 | 0 |
2018 | 2,556 |
2017 | 10,436 |
2016 | 3,587 |
Prior | 20,926 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 37,628 |
Pass [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 5,483 |
2019 | 2,334 |
2018 | 971 |
2017 | 1,068 |
2016 | 1,714 |
Prior | 1,380 |
Revolving loans amortized cost basis | 72,501 |
Revolving loans converted to term loans | 1,994 |
Total | 87,445 |
Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 4,647 |
2019 | 12,360 |
2018 | 21,255 |
2017 | 23,694 |
2016 | 15,458 |
Prior | 61,475 |
Revolving loans amortized cost basis | 33,750 |
Revolving loans converted to term loans | 2,950 |
Total | 175,589 | 173,486
Special Mention [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 1,235 |
2018 | 3,087 |
2017 | 814 |
2016 | 241 |
Prior | 5,015 |
Revolving loans amortized cost basis | 15,970 |
Revolving loans converted to term loans | 1,022 |
Total | 27,384 |
Special Mention [Member] | Commercial Trade Financing [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 1,113 |
2016 | 1,352 |
Prior | 6,910 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 9,375 |
Special Mention [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Special Mention [Member] | Real Estate Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 4,619 |
2019 | 11,125 |
2018 | 18,168 |
2017 | 21,767 |
2016 | 13,865 |
Prior | 48,591 |
Revolving loans amortized cost basis | 5,447 |
Revolving loans converted to term loans | 297 |
Total | 123,879 |
Special Mention [Member] | Construction Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Special Mention [Member] | Consumer Mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 15 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 456 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 471 |
Special Mention [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 13 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 11,596 |
Revolving loans converted to term loans | 1,631 |
Total | 13,240 |
Special Mention [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 412 |
Total | 412 |
Special Mention [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 91 |
Revolving loans amortized cost basis | 737 |
Revolving loans converted to term loans | 0 |
Total | 828 |
Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 4,545 |
2019 | 1,142 |
2018 | 7,119 |
2017 | 10,013 |
2016 | 6,489 |
Prior | 21,410 |
Revolving loans amortized cost basis | 7,533 |
Revolving loans converted to term loans | 14,461 |
Total | 72,712 | 73,431
Substandard [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 4,545 |
2019 | 111 |
2018 | 1,500 |
2017 | 1,815 |
2016 | 448 |
Prior | 8 |
Revolving loans amortized cost basis | 6,472 |
Revolving loans converted to term loans | 1,203 |
Total | 16,102 |
Substandard [Member] | Commercial Trade Financing [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 955 |
2017 | 1,998 |
2016 | 1,546 |
Prior | 3,657 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 8,156 |
Substandard [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Substandard [Member] | Real Estate Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 793 |
2018 | 3,815 |
2017 | 5,497 |
2016 | 1,281 |
Prior | 14,597 |
Revolving loans amortized cost basis | 237 |
Revolving loans converted to term loans | 0 |
Total | 26,220 |
Substandard [Member] | Construction Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Substandard [Member] | Consumer Mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 238 |
2018 | 0 |
2017 | 0 |
2016 | 229 |
Prior | 2,974 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 440 |
Total | 3,881 |
Substandard [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 849 |
2017 | 703 |
2016 | 2,985 |
Prior | 0 |
Revolving loans amortized cost basis | 824 |
Revolving loans converted to term loans | 12,277 |
Total | 17,638 |
Substandard [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Substandard [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 174 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 541 |
Total | 715 |
Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 | $ 0
Doubtful [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Commercial Trade Financing [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Real Estate Loan [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Construction Loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Consumer Mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | 0 |
Doubtful [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total | $ 0 |

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