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Allowance for Credit Losses and Credit Quality of Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Minimum number of days past due for loans to be considered nonperforming |  |  | 90 days |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | $ 1,141,049 |  | $ 1,141,049 |  | $ 1,952,599
2022/2021 | 2,049,671 |  | 2,049,671 |  | 1,615,395
2021/2020 | 1,710,442 |  | 1,710,442 |  | 1,012,149
2020/2019 | 1,064,936 |  | 1,064,936 |  | 774,792
2019/2018 | 727,875 |  | 727,875 |  | 518,993
Prior | 1,925,646 |  | 1,925,646 |  | 1,414,638
Revolving Loans Amortized Cost Basis | 945,652 |  | 945,652 |  | 800,156
Revolving Loans Converted to Term | 102,104 |  | 102,104 |  | 61,425
Total | 9,667,375 |  | 9,667,375 |  | 8,150,147
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | (757) |  |
2022 |  |  | (4,860) |  |
2021 |  |  | (7,389) |  |
2020 |  |  | (1,492) |  |
2019 |  |  | (1,375) |  |
Prior |  |  | (1,447) |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total | (6,321) | $ (4,693) | (17,320) | $ (13,230) |
C&I [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 172,952 |  | 172,952 |  | 297,682
2022/2021 | 305,142 |  | 305,142 |  | 253,483
2021/2020 | 258,741 |  | 258,741 |  | 169,738
2020/2019 | 168,118 |  | 168,118 |  | 94,817
2019/2018 | 86,463 |  | 86,463 |  | 40,593
Prior | 90,973 |  | 90,973 |  | 36,800
Revolving Loans Amortized Cost Basis | 375,761 |  | 375,761 |  | 344,748
Revolving Loans Converted to Term | 2,680 |  | 2,680 |  | 3,296
Total | 1,460,830 |  | 1,460,830 |  | 1,241,157
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | (1) |  |
2021 |  |  | (5) |  |
2020 |  |  | (65) |  |
2019 |  |  | 0 |  |
Prior |  |  | (329) |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total |  |  | (400) |  |
C&I [Member] | Pass [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 171,431 |  | 171,431 |  | 296,562
2022/2021 | 302,023 |  | 302,023 |  | 252,480
2021/2020 | 257,555 |  | 257,555 |  | 164,976
2020/2019 | 164,254 |  | 164,254 |  | 91,497
2019/2018 | 83,519 |  | 83,519 |  | 39,394
Prior | 75,504 |  | 75,504 |  | 32,413
Revolving Loans Amortized Cost Basis | 351,672 |  | 351,672 |  | 327,166
Revolving Loans Converted to Term | 2,666 |  | 2,666 |  | 3,133
Total | 1,408,624 |  | 1,408,624 |  | 1,207,621
C&I [Member] | Special Mention [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 0 |  | 0 |  | 1,044
2022/2021 | 3,110 |  | 3,110 |  | 524
2021/2020 | 415 |  | 415 |  | 4,531
2020/2019 | 3,494 |  | 3,494 |  | 194
2019/2018 | 655 |  | 655 |  | 1,108
Prior | 11,151 |  | 11,151 |  | 417
Revolving Loans Amortized Cost Basis | 10,676 |  | 10,676 |  | 5,234
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 29,501 |  | 29,501 |  | 13,052
C&I [Member] | Substandard [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 1,521 |  | 1,521 |  | 76
2022/2021 | 8 |  | 8 |  | 459
2021/2020 | 705 |  | 705 |  | 231
2020/2019 | 312 |  | 312 |  | 3,098
2019/2018 | 2,285 |  | 2,285 |  | 91
Prior | 4,317 |  | 4,317 |  | 3,969
Revolving Loans Amortized Cost Basis | 13,413 |  | 13,413 |  | 12,348
Revolving Loans Converted to Term | 14 |  | 14 |  | 163
Total | 22,575 |  | 22,575 |  | 20,435
C&I [Member] | Doubtful [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 0 |  | 0 |  | 0
2022/2021 | 1 |  | 1 |  | 20
2021/2020 | 66 |  | 66 |  | 0
2020/2019 | 58 |  | 58 |  | 28
2019/2018 | 4 |  | 4 |  | 0
Prior | 1 |  | 1 |  | 1
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 130 |  | 130 |  | 49
CRE [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 282,579 |  | 282,579 |  | 375,227
2022/2021 | 513,117 |  | 513,117 |  | 466,754
2021/2020 | 564,984 |  | 564,984 |  | 442,196
2020/2019 | 481,900 |  | 481,900 |  | 340,146
2019/2018 | 346,642 |  | 346,642 |  | 223,612
Prior | 842,081 |  | 842,081 |  | 614,625
Revolving Loans Amortized Cost Basis | 286,276 |  | 286,276 |  | 203,126
Revolving Loans Converted to Term | 81,892 |  | 81,892 |  | 29,722
Total | 3,399,471 |  | 3,399,471 |  | 2,695,408
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | 0 |  |
2021 |  |  | 0 |  |
2020 |  |  | 0 |  |
2019 |  |  | (114) |  |
Prior |  |  | 0 |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total |  |  | (114) |  |
CRE [Member] | Pass [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 278,517 |  | 278,517 |  | 374,313
2022/2021 | 510,690 |  | 510,690 |  | 465,990
2021/2020 | 549,056 |  | 549,056 |  | 439,012
2020/2019 | 470,616 |  | 470,616 |  | 333,568
2019/2018 | 329,634 |  | 329,634 |  | 217,141
Prior | 775,502 |  | 775,502 |  | 566,783
Revolving Loans Amortized Cost Basis | 276,477 |  | 276,477 |  | 201,563
Revolving Loans Converted to Term | 67,162 |  | 67,162 |  | 24,735
Total | 3,257,654 |  | 3,257,654 |  | 2,623,105
CRE [Member] | Special Mention [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 3,678 |  | 3,678 |  | 605
2022/2021 | 2,236 |  | 2,236 |  | 764
2021/2020 | 9,041 |  | 9,041 |  | 868
2020/2019 | 8,082 |  | 8,082 |  | 2,641
2019/2018 | 13,915 |  | 13,915 |  | 4,649
Prior | 21,829 |  | 21,829 |  | 24,023
Revolving Loans Amortized Cost Basis | 8,250 |  | 8,250 |  | 850
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 67,031 |  | 67,031 |  | 34,400
CRE [Member] | Substandard [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 384 |  | 384 |  | 309
2022/2021 | 191 |  | 191 |  | 0
2021/2020 | 6,887 |  | 6,887 |  | 2,316
2020/2019 | 3,202 |  | 3,202 |  | 3,937
2019/2018 | 3,093 |  | 3,093 |  | 1,822
Prior | 44,750 |  | 44,750 |  | 23,819
Revolving Loans Amortized Cost Basis | 1,549 |  | 1,549 |  | 713
Revolving Loans Converted to Term | 14,730 |  | 14,730 |  | 4,987
Total | 74,786 |  | 74,786 |  | 37,903
Auto [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 369,321 |  | 369,321 |  | 489,366
2022/2021 | 396,174 |  | 396,174 |  | 239,745
2021/2020 | 176,700 |  | 176,700 |  | 76,257
2020/2019 | 50,154 |  | 50,154 |  | 100,000
2019/2018 | 56,647 |  | 56,647 |  | 44,277
Prior | 20,087 |  | 20,087 |  | 13,056
Revolving Loans Amortized Cost Basis | 13 |  | 13 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 1,069,096 |  | 1,069,096 |  | 962,701
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | (75) |  |
2022 |  |  | (827) |  |
2021 |  |  | (865) |  |
2020 |  |  | (283) |  |
2019 |  |  | (219) |  |
Prior |  |  | (243) |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total |  |  | (2,512) |  |
Auto [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 369,178 |  | 369,178 |  | 488,776
2022/2021 | 395,362 |  | 395,362 |  | 239,090
2021/2020 | 176,026 |  | 176,026 |  | 75,853
2020/2019 | 49,917 |  | 49,917 |  | 99,615
2019/2018 | 56,455 |  | 56,455 |  | 44,061
Prior | 19,979 |  | 19,979 |  | 13,027
Revolving Loans Amortized Cost Basis | 13 |  | 13 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 1,066,930 |  | 1,066,930 |  | 960,422
Auto [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 143 |  | 143 |  | 590
2022/2021 | 812 |  | 812 |  | 655
2021/2020 | 674 |  | 674 |  | 404
2020/2019 | 237 |  | 237 |  | 385
2019/2018 | 192 |  | 192 |  | 216
Prior | 108 |  | 108 |  | 29
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 2,166 |  | 2,166 |  | 2,279
Residential Solar [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 155,132 |  | 155,132 |  | 486,262
2022/2021 | 439,449 |  | 439,449 |  | 194,069
2021/2020 | 182,212 |  | 182,212 |  | 74,582
2020/2019 | 67,618 |  | 67,618 |  | 54,687
2019/2018 | 48,434 |  | 48,434 |  | 36,135
Prior | 41,237 |  | 41,237 |  | 11,063
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 934,082 |  | 934,082 |  | 856,798
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | (121) |  |
2022 |  |  | (1,244) |  |
2021 |  |  | (696) |  |
2020 |  |  | (45) |  |
2019 |  |  | (447) |  |
Prior |  |  | (193) |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total |  |  | (2,746) |  |
Residential Solar [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 155,132 |  | 155,132 |  | 485,942
2022/2021 | 438,855 |  | 438,855 |  | 193,971
2021/2020 | 182,153 |  | 182,153 |  | 74,532
2020/2019 | 67,562 |  | 67,562 |  | 54,662
2019/2018 | 48,362 |  | 48,362 |  | 36,119
Prior | 41,139 |  | 41,139 |  | 11,019
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 933,203 |  | 933,203 |  | 856,245
Residential Solar [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 0 |  | 0 |  | 320
2022/2021 | 594 |  | 594 |  | 98
2021/2020 | 59 |  | 59 |  | 50
2020/2019 | 56 |  | 56 |  | 25
2019/2018 | 72 |  | 72 |  | 16
Prior | 98 |  | 98 |  | 44
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 879 |  | 879 |  | 553
Other Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Overdrawn deposit related to gross charge-offs reported as 2022 originations |  |  | 200 |  |
Overdrawn deposit related to gross charge-offs reported as 2023 originations |  |  | 500 |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 11,221 |  | 11,221 |  | 52,783
2022/2021 | 32,303 |  | 32,303 |  | 111,462
2021/2020 | 69,474 |  | 69,474 |  | 36,807
2020/2019 | 24,299 |  | 24,299 |  | 27,630
2019/2018 | 17,373 |  | 17,373 |  | 15,593
Prior | 18,946 |  | 18,946 |  | 15,822
Revolving Loans Amortized Cost Basis | 18,553 |  | 18,553 |  | 19,226
Revolving Loans Converted to Term | 35 |  | 35 |  | 265
Total | 192,204 |  | 192,204 |  | 279,588
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | (561) |  |
2022 |  |  | (2,788) |  |
2021 |  |  | (5,742) |  |
2020 |  |  | (1,099) |  |
2019 |  |  | (595) |  |
Prior |  |  | (303) |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total |  |  | (11,088) |  |
Other Consumer [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 11,221 |  | 11,221 |  | 52,545
2022/2021 | 31,813 |  | 31,813 |  | 110,624
2021/2020 | 68,732 |  | 68,732 |  | 36,412
2020/2019 | 24,152 |  | 24,152 |  | 27,383
2019/2018 | 17,234 |  | 17,234 |  | 15,536
Prior | 18,599 |  | 18,599 |  | 15,735
Revolving Loans Amortized Cost Basis | 18,552 |  | 18,552 |  | 19,218
Revolving Loans Converted to Term | 3 |  | 3 |  | 250
Total | 190,306 |  | 190,306 |  | 277,703
Other Consumer [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 0 |  | 0 |  | 238
2022/2021 | 490 |  | 490 |  | 838
2021/2020 | 742 |  | 742 |  | 395
2020/2019 | 147 |  | 147 |  | 247
2019/2018 | 139 |  | 139 |  | 57
Prior | 347 |  | 347 |  | 87
Revolving Loans Amortized Cost Basis | 1 |  | 1 |  | 8
Revolving Loans Converted to Term | 32 |  | 32 |  | 15
Total | 1,898 |  | 1,898 |  | 1,885
Residential [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 149,844 |  | 149,844 |  | 251,279
2022/2021 | 363,486 |  | 363,486 |  | 349,882
2021/2020 | 458,331 |  | 458,331 |  | 212,569
2020/2019 | 272,847 |  | 272,847 |  | 157,512
2019/2018 | 172,316 |  | 172,316 |  | 158,783
Prior | 912,322 |  | 912,322 |  | 723,272
Revolving Loans Amortized Cost Basis | 265,049 |  | 265,049 |  | 233,056
Revolving Loans Converted to Term | 17,497 |  | 17,497 |  | 28,142
Total | 2,611,692 |  | 2,611,692 |  | 2,114,495
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2023 |  |  | 0 |  |
2022 |  |  | 0 |  |
2021 |  |  | (81) |  |
2020 |  |  | 0 |  |
2019 |  |  | 0 |  |
Prior |  |  | (379) |  |
Revolving Loans Amortized Cost Basis |  |  | 0 |  |
Revolving Loans Converted to Term |  |  | 0 |  |
Total | (16) | $ (118) | (460) | $ (520) |
Residential [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 149,700 |  | 149,700 |  | 251,012
2022/2021 | 363,044 |  | 363,044 |  | 349,498
2021/2020 | 457,105 |  | 457,105 |  | 212,161
2020/2019 | 272,533 |  | 272,533 |  | 156,957
2019/2018 | 171,854 |  | 171,854 |  | 157,755
Prior | 904,002 |  | 904,002 |  | 717,621
Revolving Loans Amortized Cost Basis | 265,049 |  | 265,049 |  | 233,056
Revolving Loans Converted to Term | 17,497 |  | 17,497 |  | 28,122
Total | 2,600,784 |  | 2,600,784 |  | 2,106,182
Residential [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2023/2022 | 144 |  | 144 |  | 267
2022/2021 | 442 |  | 442 |  | 384
2021/2020 | 1,226 |  | 1,226 |  | 408
2020/2019 | 314 |  | 314 |  | 555
2019/2018 | 462 |  | 462 |  | 1,028
Prior | 8,320 |  | 8,320 |  | 5,651
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 20
Total | $ 10,908 |  | $ 10,908 |  | $ 8,313

X
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- Definition The threshold period past due for a loan to be considered nonperforming, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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