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Loans and Allowance for Credit Losses - Summary of Amortized Cost Balance of Each of Loan Classes Disaggregated by Collateral Type and Origination Year (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | $ 4,019,184 | $ 5,779,727
Amortized Cost Basis by Origination Year 2021 | 4,964,921 | 3,516,428
Amortized Cost Basis by Origination Year 2020 | 2,723,868 | 1,605,604
Amortized Cost Basis by Origination Year 2019 | 1,192,412 | 633,731
Amortized Cost Basis by Origination Year 2018 | 454,912 | 435,695
Amortized Cost Basis by Origination Year Prior to 2018 | 787,051 | 705,980
Amortized Cost - Revolving Loans | 5,733,070 | 4,489,817
Amortized Cost - Revolving Loans Converted to Term Loans | 8,155 | 3,889
Total Loans | 19,883,573 | 17,170,871
Commercial and Industrial Portfolio [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 1,688,668 | 2,412,187
Amortized Cost Basis by Origination Year 2021 | 1,700,520 | 951,267
Amortized Cost Basis by Origination Year 2020 | 689,559 | 359,656
Amortized Cost Basis by Origination Year 2019 | 283,992 | 151,532
Amortized Cost Basis by Origination Year 2018 | 103,519 | 115,915
Amortized Cost Basis by Origination Year Prior to 2018 | 95,065 | 133,043
Amortized Cost - Revolving Loans | 4,221,627 | 3,134,273
Amortized Cost - Revolving Loans Converted to Term Loans | 6,164 | 247
Total Loans | 8,789,114 | 7,258,120
Commercial and Industrial Portfolio [Member] | Equipment/Accounts Receivable/Inventory [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 1,680,546 | 2,400,110
Amortized Cost Basis by Origination Year 2021 | 1,695,190 | 945,383
Amortized Cost Basis by Origination Year 2020 | 685,162 | 356,348
Amortized Cost Basis by Origination Year 2019 | 281,578 | 150,892
Amortized Cost Basis by Origination Year 2018 | 103,022 | 115,571
Amortized Cost Basis by Origination Year Prior to 2018 | 94,427 | 131,900
Amortized Cost - Revolving Loans | 4,056,424 | 2,984,740
Amortized Cost - Revolving Loans Converted to Term Loans | 6,094 | 247
Total Loans | 8,602,443 | 7,085,191
Commercial and Industrial Portfolio [Member] | Agriculture [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 8,122 | 12,077
Amortized Cost Basis by Origination Year 2021 | 5,330 | 5,884
Amortized Cost Basis by Origination Year 2020 | 4,397 | 3,308
Amortized Cost Basis by Origination Year 2019 | 2,414 | 640
Amortized Cost Basis by Origination Year 2018 | 497 | 344
Amortized Cost Basis by Origination Year Prior to 2018 | 638 | 1,143
Amortized Cost - Revolving Loans | 160,658 | 130,946
Amortized Cost - Revolving Loans Converted to Term Loans | 70 |
Total Loans | 182,126 | 154,342
Commercial and Industrial Portfolio [Member] | Overdrafts [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost - Revolving Loans | 4,545 | 18,587
Total Loans | 4,545 | 18,587
Specialty Lending Portfolio [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 18,623 | 34,552
Amortized Cost Basis by Origination Year 2021 | 56,139 | 49,373
Amortized Cost Basis by Origination Year 2020 | 40,785 |
Amortized Cost - Revolving Loans | 432,576 | 438,437
Total Loans | 548,123 | 522,362
Specialty Lending Portfolio [Member] | Asset-based Lending [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 18,623 | 34,552
Amortized Cost Basis by Origination Year 2021 | 56,139 | 49,373
Amortized Cost Basis by Origination Year 2020 | 40,785 |
Amortized Cost - Revolving Loans | 432,576 | 331,282
Total Loans | 548,123 | 415,207
Specialty Lending Portfolio [Member] | Factoring [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost - Revolving Loans |  | 107,155
Total Loans |  | 107,155
Commercial Real Estate Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 1,689,488 | 2,350,910
Amortized Cost Basis by Origination Year 2021 | 2,369,675 | 1,742,749
Amortized Cost Basis by Origination Year 2020 | 1,327,751 | 975,704
Amortized Cost Basis by Origination Year 2019 | 692,311 | 396,747
Amortized Cost Basis by Origination Year 2018 | 280,960 | 247,282
Amortized Cost Basis by Origination Year Prior to 2018 | 539,515 | 459,957
Amortized Cost - Revolving Loans | 204,291 | 93,196
Amortized Cost - Revolving Loans Converted to Term Loans | 226 | 999
Total Loans | 7,104,217 | 6,267,544
Commercial Real Estate Portfolio Segment | Owner-occupied [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 490,801 | 680,135
Amortized Cost Basis by Origination Year 2021 | 602,062 | 519,448
Amortized Cost Basis by Origination Year 2020 | 405,019 | 226,631
Amortized Cost Basis by Origination Year 2019 | 186,294 | 177,576
Amortized Cost Basis by Origination Year 2018 | 145,177 | 91,539
Amortized Cost Basis by Origination Year Prior to 2018 | 201,132 | 159,482
Amortized Cost - Revolving Loans | 92,172 | 11,727
Total Loans | 2,122,657 | 1,866,538
Commercial Real Estate Portfolio Segment | Non-owner-occupied [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 715,475 | 1,058,025
Amortized Cost Basis by Origination Year 2021 | 917,810 | 689,167
Amortized Cost Basis by Origination Year 2020 | 569,503 | 591,886
Amortized Cost Basis by Origination Year 2019 | 417,488 | 162,491
Amortized Cost Basis by Origination Year 2018 | 117,616 | 135,100
Amortized Cost Basis by Origination Year Prior to 2018 | 305,540 | 258,541
Amortized Cost - Revolving Loans | 10,517 | 10,969
Total Loans | 3,053,949 | 2,906,179
Commercial Real Estate Portfolio Segment | Farmland [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 83,777 | 61,505
Amortized Cost Basis by Origination Year 2021 | 49,189 | 273,624
Amortized Cost Basis by Origination Year 2020 | 229,799 | 34,145
Amortized Cost Basis by Origination Year 2019 | 24,407 | 16,969
Amortized Cost Basis by Origination Year 2018 | 16,516 | 19,929
Amortized Cost Basis by Origination Year Prior to 2018 | 26,306 | 34,858
Amortized Cost - Revolving Loans | 86,372 | 38,239
Amortized Cost - Revolving Loans Converted to Term Loans | 226 | 999
Total Loans | 516,592 | 480,268
Commercial Real Estate Portfolio Segment | 5+ Multi-family [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 33,595 | 58,268
Amortized Cost Basis by Origination Year 2021 | 30,206 | 95,024
Amortized Cost Basis by Origination Year 2020 | 71,213 | 41,426
Amortized Cost Basis by Origination Year 2019 | 19,100 | 1,206
Amortized Cost Basis by Origination Year 2018 | 1,651 | 511
Amortized Cost Basis by Origination Year Prior to 2018 | 6,126 | 6,820
Amortized Cost - Revolving Loans | 3,526 | 2,057
Total Loans | 165,417 | 205,312
Commercial Real Estate Portfolio Segment | 1-4 Family Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 45,302 | 53,004
Amortized Cost Basis by Origination Year 2021 | 33,332 | 4,933
Amortized Cost Basis by Origination Year 2020 |  | 17,333
Amortized Cost - Revolving Loans | 1,226 | 985
Total Loans | 79,860 | 76,255
Commercial Real Estate Portfolio Segment | General Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 320,538 | 439,973
Amortized Cost Basis by Origination Year 2021 | 737,076 | 160,553
Amortized Cost Basis by Origination Year 2020 | 52,217 | 64,283
Amortized Cost Basis by Origination Year 2019 | 45,022 | 38,505
Amortized Cost Basis by Origination Year 2018 |  | 203
Amortized Cost Basis by Origination Year Prior to 2018 | 411 | 256
Amortized Cost - Revolving Loans | 10,478 | 29,219
Total Loans | 1,165,742 | 732,992
Consumer Real Estate Portfolio [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 525,810 | 839,875
Amortized Cost Basis by Origination Year 2021 | 767,725 | 719,110
Amortized Cost Basis by Origination Year 2020 | 631,429 | 203,855
Amortized Cost Basis by Origination Year 2019 | 178,913 | 60,458
Amortized Cost Basis by Origination Year 2018 | 50,829 | 63,107
Amortized Cost Basis by Origination Year Prior to 2018 | 149,274 | 110,659
Amortized Cost - Revolving Loans | 329,323 | 320,446
Amortized Cost - Revolving Loans Converted to Term Loans | 1,215 | 2,523
Total Loans | 2,634,518 | 2,320,033
Consumer Real Estate Portfolio [Member] | HELOC [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 127 | 248
Amortized Cost Basis by Origination Year 2021 |  | 547
Amortized Cost Basis by Origination Year 2020 | 639 | 327
Amortized Cost Basis by Origination Year 2019 | 280 | 574
Amortized Cost Basis by Origination Year 2018 | 512 | 646
Amortized Cost Basis by Origination Year Prior to 2018 | 5,646 | 6,363
Amortized Cost - Revolving Loans | 329,228 | 320,410
Amortized Cost - Revolving Loans Converted to Term Loans | 1,215 | 2,523
Total Loans | 337,647 | 331,638
Consumer Real Estate Portfolio [Member] | First Lien: 1-4 Family [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 518,059 | 830,513
Amortized Cost Basis by Origination Year 2021 | 759,084 | 712,264
Amortized Cost Basis by Origination Year 2020 | 625,458 | 200,167
Amortized Cost Basis by Origination Year 2019 | 175,944 | 58,734
Amortized Cost Basis by Origination Year 2018 | 49,339 | 61,641
Amortized Cost Basis by Origination Year Prior to 2018 | 141,975 | 102,997
Amortized Cost - Revolving Loans | 13 | 19
Total Loans | 2,269,872 | 1,966,335
Consumer Real Estate Portfolio [Member] | Junior Lien: 1-4 Family [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 7,624 | 9,114
Amortized Cost Basis by Origination Year 2021 | 8,641 | 6,299
Amortized Cost Basis by Origination Year 2020 | 5,332 | 3,361
Amortized Cost Basis by Origination Year 2019 | 2,689 | 1,150
Amortized Cost Basis by Origination Year 2018 | 978 | 820
Amortized Cost Basis by Origination Year Prior to 2018 | 1,653 | 1,299
Amortized Cost - Revolving Loans | 82 | 17
Total Loans | 26,999 | 22,060
Consumer Portfolio [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 25,237 | 42,251
Amortized Cost Basis by Origination Year 2021 | 36,022 | 9,816
Amortized Cost Basis by Origination Year 2020 | 6,272 | 7,411
Amortized Cost Basis by Origination Year 2019 | 4,297 | 2,650
Amortized Cost Basis by Origination Year 2018 | 1,655 | 3,021
Amortized Cost Basis by Origination Year Prior to 2018 | 848 | 928
Amortized Cost - Revolving Loans | 59,944 | 62,938
Amortized Cost - Revolving Loans Converted to Term Loans | 550 | 120
Total Loans | 134,825 | 129,135
Consumer Portfolio [Member] | Revolving Line [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 469 | 974
Amortized Cost Basis by Origination Year 2021 | 585 |
Amortized Cost - Revolving Loans | 54,610 | 60,049
Amortized Cost - Revolving Loans Converted to Term Loans | 550 | 120
Total Loans | 56,214 | 61,143
Consumer Portfolio [Member] | Auto [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 7,346 | 9,886
Amortized Cost Basis by Origination Year 2021 | 7,402 | 7,775
Amortized Cost Basis by Origination Year 2020 | 5,022 | 5,462
Amortized Cost Basis by Origination Year 2019 | 3,305 | 1,107
Amortized Cost Basis by Origination Year 2018 | 451 | 479
Amortized Cost Basis by Origination Year Prior to 2018 | 222 | 220
Total Loans | 23,748 | 24,929
Consumer Portfolio [Member] | Other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 17,422 | 31,391
Amortized Cost Basis by Origination Year 2021 | 28,035 | 2,041
Amortized Cost Basis by Origination Year 2020 | 1,250 | 1,949
Amortized Cost Basis by Origination Year 2019 | 992 | 1,543
Amortized Cost Basis by Origination Year 2018 | 1,204 | 2,542
Amortized Cost Basis by Origination Year Prior to 2018 | 626 | 708
Amortized Cost - Revolving Loans | 5,334 | 2,889
Total Loans | 54,863 | 43,063
Credit Cards Portfolio [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost - Revolving Loans | 435,980 | 391,389
Total Loans | 435,980 | 391,389
Credit Cards Portfolio [Member] | Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost - Revolving Loans | 183,799 | 180,296
Total Loans | 183,799 | 180,296
Credit Cards Portfolio [Member] | Commercial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost - Revolving Loans | 252,181 | 211,093
Total Loans | 252,181 | 211,093
Leases and Other Portfolio [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 71,358 | 99,952
Amortized Cost Basis by Origination Year 2021 | 34,840 | 44,113
Amortized Cost Basis by Origination Year 2020 | 28,072 | 58,978
Amortized Cost Basis by Origination Year 2019 | 32,899 | 22,344
Amortized Cost Basis by Origination Year 2018 | 17,949 | 6,370
Amortized Cost Basis by Origination Year Prior to 2018 | 2,349 | 1,393
Amortized Cost - Revolving Loans | 49,329 | 49,138
Total Loans | 236,796 | 282,288
Leases and Other Portfolio [Member] | Leases [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2020 |  | 814
Amortized Cost Basis by Origination Year 2019 | 712 |
Amortized Cost Basis by Origination Year 2018 |  | 739
Amortized Cost Basis by Origination Year Prior to 2018 | 1,241 | 614
Total Loans | 1,953 | 2,167
Leases and Other Portfolio [Member] | Other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amortized Cost Basis by Origination Year 2022 | 71,358 | 99,952
Amortized Cost Basis by Origination Year 2021 | 34,840 | 44,113
Amortized Cost Basis by Origination Year 2020 | 28,072 | 58,164
Amortized Cost Basis by Origination Year 2019 | 32,187 | 22,344
Amortized Cost Basis by Origination Year 2018 | 17,949 | 5,631
Amortized Cost Basis by Origination Year Prior to 2018 | 1,108 | 779
Amortized Cost - Revolving Loans | 49,329 | 49,138
Total Loans | $ 234,843 | $ 280,121

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