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Allowance for Credit Losses and Credit Quality of Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 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 | $ 379,087 |  | $ 1,952,599
2022/2021 | 1,890,474 |  | 1,615,395
2021/2020 | 1,562,877 |  | 1,012,149
2020/2019 | 965,120 |  | 774,792
2019/2018 | 739,552 |  | 518,993
Prior | 1,845,010 |  | 1,414,638
Revolving Loans Amortized Cost Basis | 803,235 |  | 800,156
Revolving Loans Converted to Term | 79,223 |  | 61,425
Total | 8,264,578 |  | 8,150,147
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | (1,579) |  |
2021 | (2,582) |  |
2020 | (647) |  |
2019 | (441) |  |
Prior | (601) |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (5,850) | $ (4,491) |
C&I [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 59,345 |  | 297,682
2022/2021 | 290,652 |  | 253,483
2021/2020 | 241,710 |  | 169,738
2020/2019 | 159,323 |  | 94,817
2019/2018 | 85,479 |  | 40,593
Prior | 69,991 |  | 36,800
Revolving Loans Amortized Cost Basis | 342,111 |  | 344,748
Revolving Loans Converted to Term | 17,153 |  | 3,296
Total | 1,265,764 |  | 1,241,157
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | (1) |  |
2021 | (1) |  |
2020 | (3) |  |
2019 | 0 |  |
Prior | (107) |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (112) |  |
C&I [Member] | Pass [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 58,995 |  | 296,562
2022/2021 | 287,770 |  | 252,480
2021/2020 | 240,751 |  | 164,976
2020/2019 | 154,864 |  | 91,497
2019/2018 | 83,060 |  | 39,394
Prior | 65,062 |  | 32,413
Revolving Loans Amortized Cost Basis | 323,916 |  | 327,166
Revolving Loans Converted to Term | 17,121 |  | 3,133
Total | 1,231,539 |  | 1,207,621
C&I [Member] | Special Mention [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 0 |  | 1,044
2022/2021 | 956 |  | 524
2021/2020 | 524 |  | 4,531
2020/2019 | 3,925 |  | 194
2019/2018 | 90 |  | 1,108
Prior | 1,439 |  | 417
Revolving Loans Amortized Cost Basis | 5,965 |  | 5,234
Revolving Loans Converted to Term | 0 |  | 0
Total | 12,899 |  | 13,052
C&I [Member] | Substandard [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 350 |  | 76
2022/2021 | 1,902 |  | 459
2021/2020 | 435 |  | 231
2020/2019 | 534 |  | 3,098
2019/2018 | 2,301 |  | 91
Prior | 3,489 |  | 3,969
Revolving Loans Amortized Cost Basis | 12,230 |  | 12,348
Revolving Loans Converted to Term | 32 |  | 163
Total | 21,273 |  | 20,435
C&I [Member] | Doubtful [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 0 |  | 0
2022/2021 | 24 |  | 20
2021/2020 | 0 |  | 0
2020/2019 | 0 |  | 28
2019/2018 | 28 |  | 0
Prior | 1 |  | 1
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 53 |  | 49
CRE [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 62,072 |  | 375,227
2022/2021 | 367,115 |  | 466,754
2021/2020 | 469,672 |  | 442,196
2020/2019 | 427,017 |  | 340,146
2019/2018 | 339,300 |  | 223,612
Prior | 805,745 |  | 614,625
Revolving Loans Amortized Cost Basis | 216,545 |  | 203,126
Revolving Loans Converted to Term | 42,648 |  | 29,722
Total | 2,730,114 |  | 2,695,408
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | 0 |  |
2021 | 0 |  |
2020 | 0 |  |
2019 | (57) |  |
Prior | 0 |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (57) |  |
CRE [Member] | Pass [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 62,072 |  | 374,313
2022/2021 | 364,540 |  | 465,990
2021/2020 | 461,622 |  | 439,012
2020/2019 | 417,952 |  | 333,568
2019/2018 | 333,603 |  | 217,141
Prior | 767,943 |  | 566,783
Revolving Loans Amortized Cost Basis | 211,630 |  | 201,563
Revolving Loans Converted to Term | 42,648 |  | 24,735
Total | 2,662,010 |  | 2,623,105
CRE [Member] | Special Mention [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 0 |  | 605
2022/2021 | 2,266 |  | 764
2021/2020 | 6,785 |  | 868
2020/2019 | 3,394 |  | 2,641
2019/2018 | 2,399 |  | 4,649
Prior | 9,525 |  | 24,023
Revolving Loans Amortized Cost Basis | 3,590 |  | 850
Revolving Loans Converted to Term | 0 |  | 0
Total | 27,959 |  | 34,400
CRE [Member] | Substandard [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 0 |  | 309
2022/2021 | 309 |  | 0
2021/2020 | 1,265 |  | 2,316
2020/2019 | 5,671 |  | 3,937
2019/2018 | 3,298 |  | 1,822
Prior | 28,277 |  | 23,819
Revolving Loans Amortized Cost Basis | 1,325 |  | 713
Revolving Loans Converted to Term | 0 |  | 4,987
Total | 40,145 |  | 37,903
Auto [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 136,907 |  | 489,366
2022/2021 | 456,307 |  | 239,745
2021/2020 | 216,908 |  | 76,257
2020/2019 | 66,489 |  | 100,000
2019/2018 | 83,846 |  | 44,277
Prior | 41,604 |  | 13,056
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 1,002,061 |  | 962,701
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | (318) |  |
2021 | (242) |  |
2020 | (127) |  |
2019 | (77) |  |
Prior | (89) |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (853) |  |
Auto [Member] | Performing [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 136,896 |  | 488,776
2022/2021 | 455,757 |  | 239,090
2021/2020 | 216,248 |  | 75,853
2020/2019 | 66,132 |  | 99,615
2019/2018 | 83,483 |  | 44,061
Prior | 41,468 |  | 13,027
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 999,984 |  | 960,422
Auto [Member] | Nonperforming [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 11 |  | 590
2022/2021 | 550 |  | 655
2021/2020 | 660 |  | 404
2020/2019 | 357 |  | 385
2019/2018 | 363 |  | 216
Prior | 136 |  | 29
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 2,077 |  | 2,279
Residential Solar [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 83,543 |  | 486,262
2022/2021 | 476,910 |  | 194,069
2021/2020 | 189,631 |  | 74,582
2020/2019 | 72,257 |  | 54,687
2019/2018 | 52,597 |  | 36,135
Prior | 45,146 |  | 11,063
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 920,084 |  | 856,798
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | (272) |  |
2021 | (334) |  |
2020 | (45) |  |
2019 | (26) |  |
Prior | (58) |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (735) |  |
Residential Solar [Member] | Performing [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 83,543 |  | 485,942
2022/2021 | 476,712 |  | 193,971
2021/2020 | 189,586 |  | 74,532
2020/2019 | 72,221 |  | 54,662
2019/2018 | 52,543 |  | 36,119
Prior | 45,043 |  | 11,019
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 919,648 |  | 856,245
Residential Solar [Member] | Nonperforming [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 0 |  | 320
2022/2021 | 198 |  | 98
2021/2020 | 45 |  | 50
2020/2019 | 36 |  | 25
2019/2018 | 54 |  | 16
Prior | 103 |  | 44
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0
Total | 436 |  | 553
Other Consumer [Member] |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Overdrawn deposit related to gross charge-offs reported as 2022 originations | 200 |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 3,689 |  | 52,783
2022/2021 | 41,993 |  | 111,462
2021/2020 | 95,665 |  | 36,807
2020/2019 | 31,791 |  | 27,630
2019/2018 | 23,665 |  | 15,593
Prior | 26,301 |  | 15,822
Revolving Loans Amortized Cost Basis | 17,935 |  | 19,226
Revolving Loans Converted to Term | 34 |  | 265
Total | 241,073 |  | 279,588
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | (988) |  |
2021 | (2,005) |  |
2020 | (472) |  |
2019 | (281) |  |
Prior | (8) |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (3,754) |  |
Other Consumer [Member] | Performing [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 3,689 |  | 52,545
2022/2021 | 41,754 |  | 110,624
2021/2020 | 95,002 |  | 36,412
2020/2019 | 31,506 |  | 27,383
2019/2018 | 23,595 |  | 15,536
Prior | 26,188 |  | 15,735
Revolving Loans Amortized Cost Basis | 17,930 |  | 19,218
Revolving Loans Converted to Term | 18 |  | 250
Total | 239,682 |  | 277,703
Other Consumer [Member] | Nonperforming [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 0 |  | 238
2022/2021 | 239 |  | 838
2021/2020 | 663 |  | 395
2020/2019 | 285 |  | 247
2019/2018 | 70 |  | 57
Prior | 113 |  | 87
Revolving Loans Amortized Cost Basis | 5 |  | 8
Revolving Loans Converted to Term | 16 |  | 15
Total | 1,391 |  | 1,885
Residential [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 33,531 |  | 251,279
2022/2021 | 257,497 |  | 349,882
2021/2020 | 349,291 |  | 212,569
2020/2019 | 208,243 |  | 157,512
2019/2018 | 154,665 |  | 158,783
Prior | 856,223 |  | 723,272
Revolving Loans Amortized Cost Basis | 226,644 |  | 233,056
Revolving Loans Converted to Term | 19,388 |  | 28,142
Total | 2,105,482 |  | 2,114,495
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |
2023 | 0 |  |
2022 | 0 |  |
2021 | 0 |  |
2020 | 0 |  |
2019 | 0 |  |
Prior | (339) |  |
Revolving Loans Amortized Cost Basis | 0 |  |
Revolving Loans Converted to Term | 0 |  |
Total | (339) | $ (312) |
Residential [Member] | Performing [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 33,490 |  | 251,012
2022/2021 | 257,316 |  | 349,498
2021/2020 | 348,907 |  | 212,161
2020/2019 | 207,985 |  | 156,957
2019/2018 | 154,174 |  | 157,755
Prior | 849,898 |  | 717,621
Revolving Loans Amortized Cost Basis | 226,644 |  | 233,056
Revolving Loans Converted to Term | 19,388 |  | 28,122
Total | 2,097,802 |  | 2,106,182
Residential [Member] | Nonperforming [Member] |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |
2023/2022 | 41 |  | 267
2022/2021 | 181 |  | 384
2021/2020 | 384 |  | 408
2020/2019 | 258 |  | 555
2019/2018 | 491 |  | 1,028
Prior | 6,325 |  | 5,651
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 20
Total | $ 7,680 |  | $ 8,313

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