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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 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | $ 2,129,465 |
2019 | 954,344 |
2018 | 804,015 |
2017 | 840,334 |
2016 | 666,584 |
Prior | 1,975,259 |
Revolving loans amortized cost basis | 924,822 |
Revolving loans converted to term loans | 53,985 |
Total loans | 8,348,808 | $ 7,568,319
Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 988,831 |
2019 | 698,744 |
2018 | 639,959 |
2017 | 668,892 |
2016 | 570,031 |
Prior | 1,710,506 |
Revolving loans amortized cost basis | 198,663 |
Revolving loans converted to term loans | 25,883 |
Total loans | 5,501,509 |
Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 14,511 |
2019 | 9,350 |
2018 | 14,945 |
2017 | 2,258 |
2016 | 0 |
Prior | 4 |
Revolving loans amortized cost basis | 44,077 |
Revolving loans converted to term loans | 0 |
Total loans | 85,145 |
SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 47,901 |
2019 | 12,821 |
2018 | 45,854 |
2017 | 69,788 |
2016 | 29,026 |
Prior | 95,530 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 2,976 |
Total loans | 303,896 |
SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 882,986 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 882,986 |
Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 110,819 |
2019 | 169,991 |
2018 | 68,341 |
2017 | 59,353 |
2016 | 32,529 |
Prior | 80,995 |
Revolving loans amortized cost basis | 281,322 |
Revolving loans converted to term loans | 8,712 |
Total loans | 812,062 | 935,127
Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,919 |
2019 | 1,765 |
2018 | 2,347 |
2017 | 6,373 |
2016 | 2,405 |
Prior | 320 |
Revolving loans amortized cost basis | 332,466 |
Revolving loans converted to term loans | 13,551 |
Total loans | 361,146 | 383,709
Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 8,478 |
2019 | 0 |
2018 | 2,556 |
2017 | 10,249 |
2016 | 3,586 |
Prior | 20,678 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 45,547 | 53,146
SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 65,463 |
2019 | 59,596 |
2018 | 29,142 |
2017 | 22,452 |
2016 | 27,421 |
Prior | 66,002 |
Revolving loans amortized cost basis | 3 |
Revolving loans converted to term loans | 432 |
Total loans | 270,511 |
Consumer and other loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 8,557 |
2019 | 2,077 |
2018 | 871 |
2017 | 969 |
2016 | 1,586 |
Prior | 1,224 |
Revolving loans amortized cost basis | 68,291 |
Revolving loans converted to term loans | 2,431 |
Total loans | 86,006 |
Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 2,112,914 |
2019 | 944,750 |
2018 | 763,869 |
2017 | 774,130 |
2016 | 640,874 |
Prior | 1,893,124 |
Revolving loans amortized cost basis | 880,898 |
Revolving loans converted to term loans | 35,633 |
Total loans | 8,046,192 | 7,321,402
Pass [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 979,499 |
2019 | 691,091 |
2018 | 607,753 |
2017 | 617,640 |
2016 | 550,105 |
Prior | 1,646,876 |
Revolving loans amortized cost basis | 192,583 |
Revolving loans converted to term loans | 24,548 |
Total loans | 5,310,095 |
Pass [Member] | Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 14,511 |
2019 | 9,350 |
2018 | 14,945 |
2017 | 2,258 |
2016 | 0 |
Prior | 4 |
Revolving loans amortized cost basis | 44,077 |
Revolving loans converted to term loans | 0 |
Total loans | 85,145 |
Pass [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 47,901 |
2019 | 12,821 |
2018 | 44,950 |
2017 | 58,839 |
2016 | 26,136 |
Prior | 86,085 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 2,976 |
Total loans | 279,708 |
Pass [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 882,986 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 882,986 |
Pass [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 104,478 |
2019 | 168,050 |
2018 | 62,453 |
2017 | 56,043 |
2016 | 32,149 |
Prior | 76,019 |
Revolving loans amortized cost basis | 257,250 |
Revolving loans converted to term loans | 6,058 |
Total loans | 762,500 |
Pass [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,041 |
2019 | 1,765 |
2018 | 1,199 |
2017 | 5,680 |
2016 | 120 |
Prior | 320 |
Revolving loans amortized cost basis | 319,211 |
Revolving loans converted to term loans | 363 |
Total loans | 329,699 |
Pass [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 8,478 |
2019 | 0 |
2018 | 2,556 |
2017 | 10,249 |
2016 | 3,586 |
Prior | 20,266 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 45,135 |
Pass [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 65,463 |
2019 | 59,596 |
2018 | 29,142 |
2017 | 22,452 |
2016 | 27,192 |
Prior | 62,593 |
Revolving loans amortized cost basis | 3 |
Revolving loans converted to term loans | 0 |
Total loans | 266,441 |
Pass [Member] | Consumer and other loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 8,557 |
2019 | 2,077 |
2018 | 871 |
2017 | 969 |
2016 | 1,586 |
Prior | 961 |
Revolving loans amortized cost basis | 67,774 |
Revolving loans converted to term loans | 1,688 |
Total loans | 84,483 |
Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 12,205 |
2019 | 8,243 |
2018 | 32,305 |
2017 | 50,344 |
2016 | 18,829 |
Prior | 61,325 |
Revolving loans amortized cost basis | 36,887 |
Revolving loans converted to term loans | 3,659 |
Total loans | 223,797 | 173,486
Special Mention [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 9,332 |
2019 | 7,162 |
2018 | 30,049 |
2017 | 43,870 |
2016 | 17,398 |
Prior | 49,840 |
Revolving loans amortized cost basis | 5,720 |
Revolving loans converted to term loans | 994 |
Total loans | 164,365 |
Special Mention [Member] | Construction [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 loans | 0 |
Special Mention [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 5,446 |
2016 | 1,336 |
Prior | 5,648 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 12,430 |
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 loans | 0 |
Special Mention [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 1,995 |
2019 | 1,081 |
2018 | 1,892 |
2017 | 1,028 |
2016 | 95 |
Prior | 4,882 |
Revolving loans amortized cost basis | 17,395 |
Revolving loans converted to term loans | 1,132 |
Total loans | 29,500 |
Special Mention [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 878 |
2019 | 0 |
2018 | 364 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving loans amortized cost basis | 13,255 |
Revolving loans converted to term loans | 1,511 |
Total loans | 16,008 |
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 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 412 |
Special Mention [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 452 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 452 |
Special Mention [Member] | Consumer and other loans [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 | 517 |
Revolving loans converted to term loans | 22 |
Total loans | 630 |
Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 4,346 |
2019 | 1,351 |
2018 | 7,841 |
2017 | 15,860 |
2016 | 6,881 |
Prior | 20,810 |
Revolving loans amortized cost basis | 7,037 |
Revolving loans converted to term loans | 14,693 |
Total loans | 78,819 | 73,431
Substandard [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 491 |
2018 | 2,157 |
2017 | 7,382 |
2016 | 2,528 |
Prior | 13,790 |
Revolving loans amortized cost basis | 360 |
Revolving loans converted to term loans | 341 |
Total loans | 27,049 |
Substandard [Member] | Construction [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 loans | 0 |
Substandard [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 904 |
2017 | 5,503 |
2016 | 1,554 |
Prior | 3,797 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 0 |
Total loans | 11,758 |
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 loans | 0 |
Substandard [Member] | Commercial and Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 4,346 |
2019 | 860 |
2018 | 3,996 |
2017 | 2,282 |
2016 | 285 |
Prior | 94 |
Revolving loans amortized cost basis | 6,677 |
Revolving loans converted to term loans | 1,522 |
Total loans | 20,062 |
Substandard [Member] | Dairy & Livestock and Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 784 |
2017 | 693 |
2016 | 2,285 |
Prior | 0 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 11,677 |
Total loans | 15,439 |
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 loans | 0 |
Substandard [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 229 |
Prior | 2,957 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 432 |
Total loans | 3,618 |
Substandard [Member] | Consumer and other loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 172 |
Revolving loans amortized cost basis | 0 |
Revolving loans converted to term loans | 721 |
Total loans | 893 |
Doubtful & Loss [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 loans | 0 | $ 0
Doubtful & Loss [Member] | Commercial real estate 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 loans | 0 |
Doubtful & Loss [Member] | Construction [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 loans | 0 |
Doubtful & Loss [Member] | SBA [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 loans | 0 |
Doubtful & Loss [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 loans | 0 |
Doubtful & Loss [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 loans | 0 |
Doubtful & Loss [Member] | Dairy & 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 loans | 0 |
Doubtful & Loss [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 loans | 0 |
Doubtful & Loss [Member] | SFR 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 loans | 0 |
Doubtful & Loss [Member] | Consumer and other 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 loans | $ 0 |

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