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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 | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
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] |  |  |  |  |
2025/2024 | $ 1,002,849 |  | $ 1,002,849 |  | $ 1,444,390
2024/2023 | 1,404,332 |  | 1,404,332 |  | 1,217,572
2023/2022 | 1,253,393 |  | 1,253,393 |  | 1,799,431
2022/2021 | 1,878,881 |  | 1,878,881 |  | 1,426,865
2021/2020 | 1,492,027 |  | 1,492,027 |  | 875,399
Prior | 3,216,189 |  | 3,216,189 |  | 2,133,000
Revolving Loans Amortized Cost Basis | 1,247,145 |  | 1,247,145 |  | 997,401
Revolving Loans Converted to Term | 100,318 |  | 100,318 |  | 75,852
Total | 11,595,134 |  | 11,595,134 |  | 9,969,910
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | (588) |  | (876)
2024/2023 |  |  | (1,783) |  | (2,471)
2023/2022 |  |  | (2,603) |  | (9,194)
2022/2021 |  |  | (6,306) |  | (8,352)
2021/2020 |  |  | (3,098) |  | (1,353)
Prior |  |  | (4,604) |  | (3,482)
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total | (6,396) | $ (6,077) | (18,982) | $ (18,384) | (25,728)
C&I [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 173,250 |  | 173,250 |  | 258,515
2024/2023 | 246,835 |  | 246,835 |  | 174,007
2023/2022 | 167,698 |  | 167,698 |  | 185,741
2022/2021 | 174,478 |  | 174,478 |  | 181,034
2021/2020 | 154,909 |  | 154,909 |  | 119,306
Prior | 191,377 |  | 191,377 |  | 106,641
Revolving Loans Amortized Cost Basis | 496,993 |  | 496,993 |  | 395,256
Revolving Loans Converted to Term | 13,688 |  | 13,688 |  | 9,713
Total | 1,619,228 |  | 1,619,228 |  | 1,430,213
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | 0 |  | 0
2024/2023 |  |  | (260) |  | (99)
2023/2022 |  |  | (173) |  | (1,063)
2022/2021 |  |  | (63) |  | (162)
2021/2020 |  |  | (25) |  | 0
Prior |  |  | (611) |  | (1,352)
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total |  |  | (1,132) |  | (2,676)
C&I [Member] | Pass [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 173,160 |  | 173,160 |  | 255,824
2024/2023 | 235,103 |  | 235,103 |  | 166,780
2023/2022 | 159,193 |  | 159,193 |  | 180,095
2022/2021 | 159,869 |  | 159,869 |  | 177,839
2021/2020 | 141,828 |  | 141,828 |  | 118,826
Prior | 181,012 |  | 181,012 |  | 101,755
Revolving Loans Amortized Cost Basis | 424,357 |  | 424,357 |  | 349,443
Revolving Loans Converted to Term | 12,236 |  | 12,236 |  | 3,588
Total | 1,486,758 |  | 1,486,758 |  | 1,354,150
C&I [Member] | Special Mention [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 51 |  | 51 |  | 272
2024/2023 | 9,549 |  | 9,549 |  | 3,265
2023/2022 | 5,685 |  | 5,685 |  | 3,461
2022/2021 | 7,943 |  | 7,943 |  | 1,639
2021/2020 | 1,315 |  | 1,315 |  | 307
Prior | 9,035 |  | 9,035 |  | 1,008
Revolving Loans Amortized Cost Basis | 37,201 |  | 37,201 |  | 22,582
Revolving Loans Converted to Term | 0 |  | 0 |  | 4,374
Total | 70,779 |  | 70,779 |  | 36,908
C&I [Member] | Substandard [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 39 |  | 39 |  | 2,419
2024/2023 | 2,183 |  | 2,183 |  | 3,895
2023/2022 | 2,820 |  | 2,820 |  | 2,183
2022/2021 | 6,664 |  | 6,664 |  | 1,555
2021/2020 | 11,766 |  | 11,766 |  | 173
Prior | 1,330 |  | 1,330 |  | 3,878
Revolving Loans Amortized Cost Basis | 35,435 |  | 35,435 |  | 23,231
Revolving Loans Converted to Term | 1,452 |  | 1,452 |  | 1,751
Total | 61,689 |  | 61,689 |  | 39,085
C&I [Member] | Doubtful [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 0 |  | 0 |  | 0
2024/2023 | 0 |  | 0 |  | 67
2023/2022 | 0 |  | 0 |  | 2
2022/2021 | 2 |  | 2 |  | 1
2021/2020 | 0 |  | 0 |  | 0
Prior | 0 |  | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 2 |  | 2 |  | 70
CRE [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 261,281 |  | 261,281 |  | 417,408
2024/2023 | 501,832 |  | 501,832 |  | 368,983
2023/2022 | 491,209 |  | 491,209 |  | 593,611
2022/2021 | 748,594 |  | 748,594 |  | 539,685
2021/2020 | 627,650 |  | 627,650 |  | 421,409
Prior | 1,590,517 |  | 1,590,517 |  | 990,610
Revolving Loans Amortized Cost Basis | 377,583 |  | 377,583 |  | 317,272
Revolving Loans Converted to Term | 60,456 |  | 60,456 |  | 47,162
Total | 4,659,122 |  | 4,659,122 |  | 3,696,140
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | 0 |  | 0
2024/2023 |  |  | 0 |  | 0
2023/2022 |  |  | (178) |  | 0
2022/2021 |  |  | 0 |  | (2,366)
2021/2020 |  |  | 0 |  | 0
Prior |  |  | (2,100) |  | 0
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total |  |  | (2,278) |  | (2,366)
CRE [Member] | Pass [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 253,786 |  | 253,786 |  | 414,835
2024/2023 | 486,188 |  | 486,188 |  | 352,834
2023/2022 | 470,842 |  | 470,842 |  | 550,682
2022/2021 | 671,895 |  | 671,895 |  | 514,134
2021/2020 | 593,011 |  | 593,011 |  | 414,737
Prior | 1,425,217 |  | 1,425,217 |  | 912,693
Revolving Loans Amortized Cost Basis | 349,876 |  | 349,876 |  | 314,574
Revolving Loans Converted to Term | 38,406 |  | 38,406 |  | 45,940
Total | 4,289,221 |  | 4,289,221 |  | 3,520,429
CRE [Member] | Special Mention [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 5,543 |  | 5,543 |  | 2,573
2024/2023 | 1,795 |  | 1,795 |  | 14,406
2023/2022 | 9,127 |  | 9,127 |  | 23,747
2022/2021 | 56,451 |  | 56,451 |  | 7,440
2021/2020 | 17,236 |  | 17,236 |  | 4,310
Prior | 65,950 |  | 65,950 |  | 16,888
Revolving Loans Amortized Cost Basis | 26,976 |  | 26,976 |  | 2,044
Revolving Loans Converted to Term | 16,567 |  | 16,567 |  | 1,222
Total | 199,645 |  | 199,645 |  | 72,630
CRE [Member] | Substandard [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 1,952 |  | 1,952 |  | 0
2024/2023 | 13,849 |  | 13,849 |  | 1,743
2023/2022 | 11,240 |  | 11,240 |  | 19,182
2022/2021 | 20,248 |  | 20,248 |  | 18,111
2021/2020 | 17,403 |  | 17,403 |  | 2,362
Prior | 99,350 |  | 99,350 |  | 61,029
Revolving Loans Amortized Cost Basis | 731 |  | 731 |  | 654
Revolving Loans Converted to Term | 5,483 |  | 5,483 |  | 0
Total | 170,256 |  | 170,256 |  | 103,081
Auto [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 443,916 |  | 443,916 |  | 558,411
2024/2023 | 414,535 |  | 414,535 |  | 322,528
2023/2022 | 228,240 |  | 228,240 |  | 238,942
2022/2021 | 155,431 |  | 155,431 |  | 90,602
2021/2020 | 50,701 |  | 50,701 |  | 20,038
Prior | 10,813 |  | 10,813 |  | 14,385
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 1,303,636 |  | 1,303,636 |  | 1,244,906
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | (94) |  | (141)
2024/2023 |  |  | (1,117) |  | (1,478)
2023/2022 |  |  | (1,091) |  | (1,610)
2022/2021 |  |  | (1,175) |  | (837)
2021/2020 |  |  | (519) |  | (116)
Prior |  |  | (208) |  | (347)
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total |  |  | (4,204) |  | (4,529)
Auto [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 443,705 |  | 443,705 |  | 557,817
2024/2023 | 413,504 |  | 413,504 |  | 321,545
2023/2022 | 227,396 |  | 227,396 |  | 238,232
2022/2021 | 154,737 |  | 154,737 |  | 90,143
2021/2020 | 50,409 |  | 50,409 |  | 19,931
Prior | 10,743 |  | 10,743 |  | 14,284
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 1,300,494 |  | 1,300,494 |  | 1,241,952
Auto [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 211 |  | 211 |  | 594
2024/2023 | 1,031 |  | 1,031 |  | 983
2023/2022 | 844 |  | 844 |  | 710
2022/2021 | 694 |  | 694 |  | 459
2021/2020 | 292 |  | 292 |  | 107
Prior | 70 |  | 70 |  | 101
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 3,142 |  | 3,142 |  | 2,954
Residential Solar [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 1,872 |  | 1,872 |  | 4,381
2024/2023 | 2,254 |  | 2,254 |  | 121,968
2023/2022 | 111,472 |  | 111,472 |  | 398,899
2022/2021 | 375,133 |  | 375,133 |  | 166,506
2021/2020 | 155,524 |  | 155,524 |  | 56,692
Prior | 111,727 |  | 111,727 |  | 71,633
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 757,982 |  | 757,982 |  | 820,079
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | 0 |  | 0
2024/2023 |  |  | 0 |  | (530)
2023/2022 |  |  | (828) |  | (4,441)
2022/2021 |  |  | (3,769) |  | (716)
2021/2020 |  |  | (1,123) |  | (201)
Prior |  |  | (682) |  | (694)
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total |  |  | (6,402) |  | (6,582)
Residential Solar [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 1,872 |  | 1,872 |  | 4,381
2024/2023 | 2,254 |  | 2,254 |  | 121,755
2023/2022 | 111,363 |  | 111,363 |  | 398,030
2022/2021 | 374,462 |  | 374,462 |  | 166,018
2021/2020 | 155,141 |  | 155,141 |  | 56,612
Prior | 111,602 |  | 111,602 |  | 71,472
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 756,694 |  | 756,694 |  | 818,268
Residential Solar [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 0 |  | 0 |  | 0
2024/2023 | 0 |  | 0 |  | 213
2023/2022 | 109 |  | 109 |  | 869
2022/2021 | 671 |  | 671 |  | 488
2021/2020 | 383 |  | 383 |  | 80
Prior | 125 |  | 125 |  | 161
Revolving Loans Amortized Cost Basis | 0 |  | 0 |  | 0
Revolving Loans Converted to Term | 0 |  | 0 |  | 0
Total | 1,288 |  | 1,288 |  | 1,811
Other Consumer [Member] |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Overdrawn deposit related to gross charge-offs reported as 2024 originations |  |  | 300 |  | 700
Overdrawn deposit related to gross charge-offs reported as 2025 originations |  |  | 500 |  |
Overdrawn deposit related to gross charge-offs reported as 2023 originations |  |  |  |  | 200
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 13,023 |  | 13,023 |  | 16,438
2024/2023 | 8,623 |  | 8,623 |  | 6,728
2023/2022 | 4,044 |  | 4,044 |  | 11,999
2022/2021 | 5,957 |  | 5,957 |  | 27,478
2021/2020 | 15,152 |  | 15,152 |  | 10,927
Prior | 16,167 |  | 16,167 |  | 16,083
Revolving Loans Amortized Cost Basis | 25,281 |  | 25,281 |  | 19,522
Revolving Loans Converted to Term | 26 |  | 26 |  | 42
Total | 88,273 |  | 88,273 |  | 109,217
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | (494) |  | (735)
2024/2023 |  |  | (390) |  | (330)
2023/2022 |  |  | (72) |  | (2,080)
2022/2021 |  |  | (785) |  | (4,271)
2021/2020 |  |  | (1,431) |  | (1,036)
Prior |  |  | (955) |  | (912)
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total |  |  | (4,127) |  | (9,364)
Other Consumer [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 13,020 |  | 13,020 |  | 16,426
2024/2023 | 8,614 |  | 8,614 |  | 6,685
2023/2022 | 4,035 |  | 4,035 |  | 11,792
2022/2021 | 5,873 |  | 5,873 |  | 27,045
2021/2020 | 14,830 |  | 14,830 |  | 10,718
Prior | 16,061 |  | 16,061 |  | 15,881
Revolving Loans Amortized Cost Basis | 25,271 |  | 25,271 |  | 19,507
Revolving Loans Converted to Term | 16 |  | 16 |  | 12
Total | 87,720 |  | 87,720 |  | 108,066
Other Consumer [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 3 |  | 3 |  | 12
2024/2023 | 9 |  | 9 |  | 43
2023/2022 | 9 |  | 9 |  | 207
2022/2021 | 84 |  | 84 |  | 433
2021/2020 | 322 |  | 322 |  | 209
Prior | 106 |  | 106 |  | 202
Revolving Loans Amortized Cost Basis | 10 |  | 10 |  | 15
Revolving Loans Converted to Term | 10 |  | 10 |  | 30
Total | 553 |  | 553 |  | 1,151
Residential [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 109,507 |  | 109,507 |  | 189,237
2024/2023 | 230,253 |  | 230,253 |  | 223,358
2023/2022 | 250,730 |  | 250,730 |  | 370,239
2022/2021 | 419,288 |  | 419,288 |  | 421,560
2021/2020 | 488,091 |  | 488,091 |  | 247,027
Prior | 1,295,588 |  | 1,295,588 |  | 933,648
Revolving Loans Amortized Cost Basis | 347,288 |  | 347,288 |  | 265,351
Revolving Loans Converted to Term | 26,148 |  | 26,148 |  | 18,935
Total | 3,166,893 |  | 3,166,893 |  | 2,669,355
Gross Charge-offs by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 |  |  | 0 |  | 0
2024/2023 |  |  | (16) |  | (34)
2023/2022 |  |  | (261) |  | 0
2022/2021 |  |  | (514) |  | 0
2021/2020 |  |  | 0 |  | 0
Prior |  |  | (48) |  | (177)
Revolving Loans Amortized Cost Basis |  |  | 0 |  | 0
Revolving Loans Converted to Term |  |  | 0 |  | 0
Total | (721) | $ (34) | (839) | $ (148) | (211)
Residential [Member] | Performing [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 109,507 |  | 109,507 |  | 188,657
2024/2023 | 229,198 |  | 229,198 |  | 222,593
2023/2022 | 247,961 |  | 247,961 |  | 369,473
2022/2021 | 414,548 |  | 414,548 |  | 419,053
2021/2020 | 485,279 |  | 485,279 |  | 246,867
Prior | 1,282,058 |  | 1,282,058 |  | 924,869
Revolving Loans Amortized Cost Basis | 347,258 |  | 347,258 |  | 265,351
Revolving Loans Converted to Term | 26,143 |  | 26,143 |  | 18,935
Total | 3,141,952 |  | 3,141,952 |  | 2,655,798
Residential [Member] | Nonperforming [Member] |  |  |  |  |
Credit Quality by Loan Class by Vintage [Abstract] |  |  |  |  |
2025/2024 | 0 |  | 0 |  | 580
2024/2023 | 1,055 |  | 1,055 |  | 765
2023/2022 | 2,769 |  | 2,769 |  | 766
2022/2021 | 4,740 |  | 4,740 |  | 2,507
2021/2020 | 2,812 |  | 2,812 |  | 160
Prior | 13,530 |  | 13,530 |  | 8,779
Revolving Loans Amortized Cost Basis | 30 |  | 30 |  | 0
Revolving Loans Converted to Term | 5 |  | 5 |  | 0
Total | $ 24,941 |  | $ 24,941 |  | $ 13,557

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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