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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 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | $ 1,119,794 | $ 2,129,465
2020 | 1,477,398 | 954,344
2019 | 871,606 | 804,015
2018 | 740,397 | 840,334
2017 | 721,326 | 666,584
Prior | 2,286,731 | 1,975,259
Revolving loans amortized cost basis | 774,142 | 924,822
Revolving loans converted to term loans | 79,916 | 53,985
Total | 8,071,310 | 8,348,808
Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 603,433 | 988,831
2020 | 992,761 | 698,744
2019 | 652,848 | 639,959
2018 | 598,103 | 668,892
2017 | 589,597 | 570,031
Prior | 1,995,801 | 1,710,506
Revolving loans amortized cost basis | 184,568 | 198,663
Revolving loans converted to term loans | 53,585 | 25,883
Total | 5,670,696 | 5,501,509
Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 3,707 | 14,511
2020 | 17,859 | 9,350
2019 | 6,993 | 14,945
2018 | 10,831 | 2,258
2017 | 0 | 0
Prior | 0 | 4
Revolving loans amortized cost basis | 48,890 | 44,077
Revolving loans converted to term loans | 0 | 0
Total | 88,280 | 85,145
SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 34,423 | 47,901
2020 | 42,665 | 12,821
2019 | 11,315 | 45,854
2018 | 43,160 | 69,788
2017 | 55,863 | 29,026
Prior | 104,352 | 95,530
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 2,976
Total | 291,778 | 303,896
SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 395,349 | 882,986
2020 | 262,466 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 657,815 | 882,986
Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 53,700 | 110,819
2020 | 96,391 | 169,991
2019 | 149,557 | 68,341
2018 | 62,764 | 59,353
2017 | 45,404 | 32,529
Prior | 88,605 | 80,995
Revolving loans amortized cost basis | 244,659 | 281,322
Revolving loans converted to term loans | 8,037 | 8,712
Total | 749,117 | 812,062
Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 1,919
2020 | 1,014 | 1,765
2019 | 1,527 | 2,347
2018 | 1,453 | 6,373
2017 | 225 | 2,405
Prior | 1,206 | 320
Revolving loans amortized cost basis | 237,344 | 332,466
Revolving loans converted to term loans | 15,012 | 13,551
Total | 257,781 | 361,146
Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 5,262 | 8,478
2020 | 8,122 | 0
2019 | 0 | 2,556
2018 | 279 | 10,249
2017 | 10,061 | 3,586
Prior | 20,933 | 20,678
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 44,657 | 45,547
SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 19,740 | 65,463
2020 | 53,029 | 59,596
2019 | 47,707 | 29,142
2018 | 23,121 | 22,452
2017 | 19,398 | 27,421
Prior | 73,557 | 66,002
Revolving loans amortized cost basis | 152 | 3
Revolving loans converted to term loans | 420 | 432
Total | 237,124 | 270,511
Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 4,180 | 8,557
2020 | 3,091 | 2,077
2019 | 1,659 | 871
2018 | 686 | 969
2017 | 778 | 1,586
Prior | 2,277 | 1,224
Revolving loans amortized cost basis | 58,529 | 68,291
Revolving loans converted to term loans | 2,862 | 2,431
Total | 74,062 | 86,006
Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 1,102,908 | 2,112,914
2020 | 1,463,516 | 944,750
2019 | 860,111 | 763,869
2018 | 697,928 | 774,130
2017 | 657,398 | 640,874
Prior | 2,196,475 | 1,893,124
Revolving loans amortized cost basis | 745,869 | 880,898
Revolving loans converted to term loans | 46,329 | 35,633
Total | 7,770,534 | 8,046,192
Pass [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 590,633 | 979,499
2020 | 983,583 | 691,091
2019 | 643,212 | 607,753
2018 | 569,056 | 617,640
2017 | 536,282 | 550,105
Prior | 1,918,411 | 1,646,876
Revolving loans amortized cost basis | 179,984 | 192,583
Revolving loans converted to term loans | 36,916 | 24,548
Total | 5,458,077 | 5,310,095
Pass [Member] | Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 3,707 | 14,511
2020 | 17,859 | 9,350
2019 | 6,993 | 14,945
2018 | 3,038 | 2,258
2017 | 0 | 0
Prior | 0 | 4
Revolving loans amortized cost basis | 47,207 | 44,077
Revolving loans converted to term loans | 0 | 0
Total | 78,804 | 85,145
Pass [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 34,423 | 47,901
2020 | 42,665 | 12,821
2019 | 11,315 | 44,950
2018 | 42,296 | 58,839
2017 | 47,190 | 26,136
Prior | 95,505 | 86,085
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 2,976
Total | 273,394 | 279,708
Pass [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 395,349 | 882,986
2020 | 260,963 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 656,312 | 882,986
Pass [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 50,590 | 104,478
2020 | 93,190 | 168,050
2019 | 147,698 | 62,453
2018 | 58,447 | 56,043
2017 | 43,464 | 32,149
Prior | 87,688 | 76,019
Revolving loans amortized cost basis | 234,803 | 257,250
Revolving loans converted to term loans | 6,423 | 6,058
Total | 722,303 | 762,500
Pass [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 1,041
2020 | 1,014 | 1,765
2019 | 1,527 | 1,199
2018 | 1,005 | 5,680
2017 | 225 | 120
Prior | 349 | 320
Revolving loans amortized cost basis | 226,192 | 319,211
Revolving loans converted to term loans | 587 | 363
Total | 230,899 | 329,699
Pass [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 5,262 | 8,478
2020 | 8,122 | 0
2019 | 0 | 2,556
2018 | 279 | 10,249
2017 | 10,061 | 3,586
Prior | 20,557 | 20,266
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 44,281 | 45,135
Pass [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 19,740 | 65,463
2020 | 53,029 | 59,596
2019 | 47,707 | 29,142
2018 | 23,121 | 22,452
2017 | 19,398 | 27,192
Prior | 71,945 | 62,593
Revolving loans amortized cost basis | 152 | 3
Revolving loans converted to term loans | 0 | 0
Total | 235,092 | 266,441
Pass [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 3,204 | 8,557
2020 | 3,091 | 2,077
2019 | 1,659 | 871
2018 | 686 | 969
2017 | 778 | 1,586
Prior | 2,020 | 961
Revolving loans amortized cost basis | 57,531 | 67,774
Revolving loans converted to term loans | 2,403 | 1,688
Total | 71,372 | 84,483
Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 11,793 | 12,205
2020 | 10,881 | 8,243
2019 | 10,891 | 32,305
2018 | 39,324 | 50,344
2017 | 53,079 | 18,829
Prior | 75,511 | 61,325
Revolving loans amortized cost basis | 25,363 | 36,887
Revolving loans converted to term loans | 24,890 | 3,659
Total | 251,732 | 223,797
Special Mention [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 10,350 | 9,332
2020 | 9,178 | 7,162
2019 | 9,165 | 30,049
2018 | 29,047 | 43,870
2017 | 48,258 | 17,398
Prior | 67,790 | 49,840
Revolving loans amortized cost basis | 4,584 | 5,720
Revolving loans converted to term loans | 16,348 | 994
Total | 194,720 | 164,365
Special Mention [Member] | Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 7,793 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 1,683 | 0
Revolving loans converted to term loans | 0 | 0
Total | 9,476 | 0
Special Mention [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 5,446
2017 | 4,186 | 1,336
Prior | 5,988 | 5,648
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 10,174 | 12,430
Special Mention [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Special Mention [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 467 | 1,995
2020 | 1,703 | 1,081
2019 | 1,726 | 1,892
2018 | 2,154 | 1,028
2017 | 635 | 95
Prior | 220 | 4,882
Revolving loans amortized cost basis | 6,951 | 17,395
Revolving loans converted to term loans | 221 | 1,132
Total | 14,077 | 29,500
Special Mention [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 878
2020 | 0 | 0
2019 | 0 | 364
2018 | 330 | 0
2017 | 0 | 0
Prior | 857 | 0
Revolving loans amortized cost basis | 11,152 | 13,255
Revolving loans converted to term loans | 8,321 | 1,511
Total | 20,660 | 16,008
Special Mention [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 376 | 412
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 376 | 412
Special Mention [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 192 | 452
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 192 | 452
Special Mention [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 976 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 88 | 91
Revolving loans amortized cost basis | 993 | 517
Revolving loans converted to term loans | 0 | 22
Total | 2,057 | 630
Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 5,093 | 4,346
2020 | 3,001 | 1,351
2019 | 604 | 7,841
2018 | 3,145 | 15,860
2017 | 10,849 | 6,881
Prior | 14,745 | 20,810
Revolving loans amortized cost basis | 2,910 | 7,037
Revolving loans converted to term loans | 8,697 | 14,693
Total | 49,044 | 78,819
Substandard [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 2,450 | 0
2020 | 0 | 491
2019 | 471 | 2,157
2018 | 0 | 7,382
2017 | 5,057 | 2,528
Prior | 9,600 | 13,790
Revolving loans amortized cost basis | 0 | 360
Revolving loans converted to term loans | 321 | 341
Total | 17,899 | 27,049
Substandard [Member] | Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Substandard [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 904
2018 | 864 | 5,503
2017 | 4,487 | 1,554
Prior | 2,859 | 3,797
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 8,210 | 11,758
Substandard [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 1,503 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 1,503 | 0
Substandard [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 2,643 | 4,346
2020 | 1,498 | 860
2019 | 133 | 3,996
2018 | 2,163 | 2,282
2017 | 1,305 | 285
Prior | 697 | 94
Revolving loans amortized cost basis | 2,905 | 6,677
Revolving loans converted to term loans | 1,393 | 1,522
Total | 12,737 | 20,062
Substandard [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 784
2018 | 118 | 693
2017 | 0 | 2,285
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 6,104 | 11,677
Total | 6,222 | 15,439
Substandard [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Substandard [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 229
Prior | 1,420 | 2,957
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 420 | 432
Total | 1,840 | 3,618
Substandard [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 169 | 172
Revolving loans amortized cost basis | 5 | 0
Revolving loans converted to term loans | 459 | 721
Total | 633 | 893
Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | Commercial real estate loans [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | Construction [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | SBA [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | SBA - Paycheck Protection Program (PPP) [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | Dairy And Livestock And Agribusiness [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | Municipal Lease Finance Receivables [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | SFR mortgage [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | 0 | 0
Doubtful [Member] | Consumer Other [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
2021 | 0 | 0
2020 | 0 | 0
2019 | 0 | 0
2018 | 0 | 0
2017 | 0 | 0
Prior | 0 | 0
Revolving loans amortized cost basis | 0 | 0
Revolving loans converted to term loans | 0 | 0
Total | $ 0 | $ 0

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