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Allowance for Credit Losses - Credit Quality Information (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, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Financing Receivable, before Allowance for Credit Loss, Total $ 14,129,383   $ 14,129,383   $ 14,408,258
Current period gross charge-offs:          
Total, Current period gross charge-offs 6,405 $ 5,770 18,232 $ 16,392  
Unlikely to be Collected Financing Receivable          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Financing Receivable, before Allowance for Credit Loss, Total 0   0   0
Real estate loan          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 160,301   160,301   210,828
2024/2023 188,627   188,627   247,668
2023/2022 230,535   230,535   622,840
2022/2021 587,788   587,788   1,103,603
2021/2020 1,053,513   1,053,513   591,758
Prior 1,845,469   1,845,469   1,389,038
Revolving Loans Amortized Cost Basis 11,713   11,713   2,419
Financing Receivable, before Allowance for Credit Loss, Total 4,077,946   4,077,946   4,168,154
Real estate loan | 740 and greater          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 118,602   118,602   168,067
2024/2023 153,379   153,379   187,710
2023/2022 183,019   183,019   492,845
2022/2021 464,813   464,813   946,390
2021/2020 890,038   890,038   498,443
Prior 1,508,771   1,508,771   1,115,557
Financing Receivable, before Allowance for Credit Loss, Total 3,318,622   3,318,622   3,409,012
Real estate loan | 680 - 739          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 14,318   14,318   18,368
2024/2023 17,797   17,797   34,901
2023/2022 23,479   23,479   65,735
2022/2021 59,890   59,890   103,622
2021/2020 110,055   110,055   57,369
Prior 185,858   185,858   138,469
Financing Receivable, before Allowance for Credit Loss, Total 411,397   411,397   418,464
Real estate loan | 620 - 679          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 3,292   3,292   1,726
2024/2023 4,078   4,078   4,380
2023/2022 4,988   4,988   23,556
2022/2021 23,155   23,155   19,355
2021/2020 17,763   17,763   14,058
Prior 45,190   45,190   40,471
Financing Receivable, before Allowance for Credit Loss, Total 98,466   98,466   103,546
Real estate loan | 550 - 619          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2024/2023 289   289   820
2023/2022 443   443   6,526
2022/2021 3,898   3,898   7,745
2021/2020 7,554   7,554   4,042
Prior 17,861   17,861   13,783
Financing Receivable, before Allowance for Credit Loss, Total 30,045   30,045   32,916
Real estate loan | Less than 550          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2024/2023 156   156   734
2023/2022 1,151   1,151   775
2022/2021 3,606   3,606   2,264
2021/2020 4,591   4,591   1,559
Prior 8,836   8,836   6,342
Financing Receivable, before Allowance for Credit Loss, Total 18,340   18,340   11,674
Real estate loan | No Score          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 6,473   6,473   13,211
2024/2023 5,108   5,108   6,719
2023/2022 5,734   5,734   16,839
2022/2021 16,590   16,590   9,916
2021/2020 9,678   9,678   5,518
Prior 45,548   45,548   45,604
Financing Receivable, before Allowance for Credit Loss, Total 89,131   89,131   97,807
Real estate loan | Fico Other          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 17,616   17,616   9,456
2024/2023 7,820   7,820   12,404
2023/2022 11,721   11,721   16,564
2022/2021 15,836   15,836   14,311
2021/2020 13,834   13,834   10,769
Prior 33,405   33,405   28,812
Revolving Loans Amortized Cost Basis 11,713   11,713   2,419
Financing Receivable, before Allowance for Credit Loss, Total 111,945   111,945   94,735
Home Equity Line          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 1,166,569   1,166,569   1,146,858
Revolving Loans Converted to Term Loans Amortized Cost Basis 4,253   4,253   4,881
Financing Receivable, before Allowance for Credit Loss, Total 1,170,822   1,170,822   1,151,739
Home Equity Line | 740 and greater          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 932,699   932,699   925,749
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,276   1,276   1,652
Financing Receivable, before Allowance for Credit Loss, Total 933,975   933,975   927,401
Home Equity Line | 680 - 739          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 173,826   173,826   161,523
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,405   1,405   1,030
Financing Receivable, before Allowance for Credit Loss, Total 175,231   175,231   162,553
Home Equity Line | 620 - 679          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 36,242   36,242   39,235
Revolving Loans Converted to Term Loans Amortized Cost Basis 643   643   1,220
Financing Receivable, before Allowance for Credit Loss, Total 36,885   36,885   40,455
Home Equity Line | 550 - 619          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 14,408   14,408   13,006
Revolving Loans Converted to Term Loans Amortized Cost Basis 538   538   416
Financing Receivable, before Allowance for Credit Loss, Total 14,946   14,946   13,422
Home Equity Line | Less than 550          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 8,653   8,653   5,993
Revolving Loans Converted to Term Loans Amortized Cost Basis 391   391   563
Financing Receivable, before Allowance for Credit Loss, Total 9,044   9,044   6,556
Home Equity Line | No Score          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 741   741   1,352
Financing Receivable, before Allowance for Credit Loss, Total 741   741   1,352
Total Loans and Leases          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 1,175,609   1,175,609   1,183,823
2024/2023 1,060,517   1,060,517   1,155,877
2023/2022 1,090,055   1,090,055   2,286,710
2022/2021 2,016,241   2,016,241   2,322,566
2021/2020 2,086,871   2,086,871   1,013,551
Prior 3,929,597   3,929,597   3,513,354
Revolving Loans Amortized Cost Basis 2,742,238   2,742,238   2,902,520
Revolving Loans Converted to Term Loans Amortized Cost Basis 28,255   28,255   29,857
Financing Receivable, before Allowance for Credit Loss, Total 14,129,383   14,129,383   14,408,258
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     390   732
2024/2023, Current period gross charge-offs     2,644   2,633
2023/2022, Current period gross charge-offs     1,616   2,941
2022/2021, Current period gross charge-offs     1,800   1,493
2021/2020, Current period gross charge-offs     1,030   897
Prior, Current period gross charge-offs     3,858   5,461
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     6,283   7,168
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs     611   692
Total, Current period gross charge-offs     18,232   22,017
Residential mortgage          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 160,301   160,301    
2024/2023 188,627   188,627    
2023/2022 230,535   230,535    
2022/2021 587,788   587,788    
2021/2020 1,053,513   1,053,513    
Prior 1,845,469   1,845,469    
Revolving Loans Amortized Cost Basis 1,178,282   1,178,282    
Revolving Loans Converted to Term Loans Amortized Cost Basis 4,253   4,253    
Financing Receivable, before Allowance for Credit Loss, Total 5,248,768   5,248,768    
Current period gross charge-offs:          
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     30    
Total, Current period gross charge-offs     30    
Residential mortgage | Real estate loan          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Financing Receivable, before Allowance for Credit Loss, Total 4,077,946   4,077,946   4,168,154
Residential mortgage | Home Equity Line          
Current period gross charge-offs:          
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     30    
Total, Current period gross charge-offs     30    
Home equity line | Home Equity Line          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Financing Receivable, before Allowance for Credit Loss, Total 1,170,822   1,170,822   1,151,739
Consumer          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 196,207   196,207   201,319
2024/2023 160,780   160,780   140,823
2023/2022 103,652   103,652   163,652
2022/2021 111,816   111,816   86,456
2021/2020 52,006   52,006   30,725
Prior 20,179   20,179   22,228
Revolving Loans Amortized Cost Basis 365,988   365,988   375,829
Revolving Loans Converted to Term Loans Amortized Cost Basis 3,035   3,035   2,937
Financing Receivable, before Allowance for Credit Loss, Total 1,013,663   1,013,663   1,023,969
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     389   732
2024/2023, Current period gross charge-offs     1,922   2,055
2023/2022, Current period gross charge-offs     1,392   2,606
2022/2021, Current period gross charge-offs     1,272   1,388
2021/2020, Current period gross charge-offs     674   676
Prior, Current period gross charge-offs     1,804   2,685
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     6,223   7,168
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs     611   692
Total, Current period gross charge-offs 4,719 4,192 14,287 13,228 18,002
Consumer | 740 and greater          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 84,749   84,749   92,329
2024/2023 70,671   70,671   65,738
2023/2022 47,226   47,226   84,007
2022/2021 57,234   57,234   44,192
2021/2020 25,525   25,525   14,607
Prior 6,915   6,915   6,897
Revolving Loans Amortized Cost Basis 97,360   97,360   101,938
Revolving Loans Converted to Term Loans Amortized Cost Basis 110   110   106
Financing Receivable, before Allowance for Credit Loss, Total 389,790   389,790   409,814
Consumer | 680 - 739          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 65,723   65,723   68,371
2024/2023 53,325   53,325   46,533
2023/2022 32,726   32,726   44,504
2022/2021 28,693   28,693   21,829
2021/2020 12,675   12,675   7,652
Prior 4,404   4,404   5,278
Revolving Loans Amortized Cost Basis 84,865   84,865   86,935
Revolving Loans Converted to Term Loans Amortized Cost Basis 509   509   509
Financing Receivable, before Allowance for Credit Loss, Total 282,920   282,920   281,611
Consumer | 620 - 679          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 33,601   33,601   30,618
2024/2023 22,847   22,847   17,728
2023/2022 12,376   12,376   19,942
2022/2021 13,283   13,283   10,252
2021/2020 6,706   6,706   4,195
Prior 3,470   3,470   4,152
Revolving Loans Amortized Cost Basis 49,756   49,756   50,544
Revolving Loans Converted to Term Loans Amortized Cost Basis 874   874   775
Financing Receivable, before Allowance for Credit Loss, Total 142,913   142,913   138,206
Consumer | 550 - 619          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 6,331   6,331   6,108
2024/2023 9,720   9,720   6,768
2023/2022 6,752   6,752   9,312
2022/2021 8,322   8,322   5,702
2021/2020 4,309   4,309   2,574
Prior 2,776   2,776   3,106
Revolving Loans Amortized Cost Basis 16,575   16,575   15,641
Revolving Loans Converted to Term Loans Amortized Cost Basis 798   798   778
Financing Receivable, before Allowance for Credit Loss, Total 55,583   55,583   49,989
Consumer | Less than 550          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 1,409   1,409   2,012
2024/2023 4,204   4,204   3,950
2023/2022 3,925   3,925   5,572
2022/2021 4,272   4,272   3,594
2021/2020 2,226   2,226   1,591
Prior 1,571   1,571   1,830
Revolving Loans Amortized Cost Basis 5,203   5,203   5,311
Revolving Loans Converted to Term Loans Amortized Cost Basis 574   574   593
Financing Receivable, before Allowance for Credit Loss, Total 23,384   23,384   24,453
Consumer | No Score          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 842   842   1,881
2024/2023 13   13   106
2023/2022 47   47   38
2022/2021 12   12    
2021/2020         7
Prior 23   23   9
Revolving Loans Amortized Cost Basis 37,625   37,625   38,932
Revolving Loans Converted to Term Loans Amortized Cost Basis 170   170   176
Financing Receivable, before Allowance for Credit Loss, Total 38,732   38,732   41,149
Consumer | Fico Other          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 3,552   3,552    
2023/2022 600   600   277
2022/2021         887
2021/2020 565   565   99
Prior 1,020   1,020   956
Revolving Loans Amortized Cost Basis 74,604   74,604   76,528
Financing Receivable, before Allowance for Credit Loss, Total 80,341   80,341   78,747
Residential Mortgage          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024         210,828
2024/2023         247,668
2023/2022         622,840
2022/2021         1,103,603
2021/2020         591,758
Prior         1,389,038
Revolving Loans Amortized Cost Basis         1,149,277
Revolving Loans Converted to Term Loans Amortized Cost Basis         4,881
Financing Receivable, before Allowance for Credit Loss, Total         5,319,893
Commercial and Industrial          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 179,486   179,486   181,920
2024/2023 137,527   137,527   84,867
2023/2022 66,571   66,571   201,675
2022/2021 129,860   129,860   252,593
2021/2020 156,728   156,728   19,149
Prior 259,254   259,254   259,834
Revolving Loans Amortized Cost Basis 1,084,624   1,084,624   1,233,054
Revolving Loans Converted to Term Loans Amortized Cost Basis 13,454   13,454   14,336
Financing Receivable, before Allowance for Credit Loss, Total 2,027,504   2,027,504   2,247,428
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     1    
2024/2023, Current period gross charge-offs     60   578
2023/2022, Current period gross charge-offs     224   335
2022/2021, Current period gross charge-offs     528   105
2021/2020, Current period gross charge-offs     356   221
Prior, Current period gross charge-offs     2,054   2,376
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     30    
Total, Current period gross charge-offs 1,106 1,178 3,253 2,764 3,615
Commercial and Industrial | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 164,270   164,270   163,980
2024/2023 126,437   126,437   73,554
2023/2022 58,184   58,184   185,433
2022/2021 113,813   113,813   249,532
2021/2020 154,746   154,746   17,775
Prior 235,902   235,902   256,119
Revolving Loans Amortized Cost Basis 986,942   986,942   1,118,075
Revolving Loans Converted to Term Loans Amortized Cost Basis 13,454   13,454   14,336
Financing Receivable, before Allowance for Credit Loss, Total 1,853,748   1,853,748   2,078,804
Commercial and Industrial | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 369   369   808
2024/2023 873   873   2,385
2023/2022 1,975   1,975   1,209
2022/2021 1,552   1,552   68
2021/2020 460   460   300
Prior 951   951   1,322
Revolving Loans Amortized Cost Basis 4,901   4,901   41,520
Financing Receivable, before Allowance for Credit Loss, Total 11,081   11,081   47,612
Commercial and Industrial | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 522   522    
2023/2022 553   553   8,096
2022/2021 10,315   10,315   196
2021/2020 29   29   309
Prior 21,031   21,031   1,114
Revolving Loans Amortized Cost Basis 46,247   46,247   26,089
Financing Receivable, before Allowance for Credit Loss, Total 78,697   78,697   35,804
Commercial and Industrial | Other Indicator          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 14,325   14,325   17,132
2024/2023 10,217   10,217   8,928
2023/2022 5,859   5,859   6,937
2022/2021 4,180   4,180   2,797
2021/2020 1,493   1,493   765
Prior 1,370   1,370   1,279
Revolving Loans Amortized Cost Basis 46,534   46,534   47,370
Financing Receivable, before Allowance for Credit Loss, Total 83,978   83,978   85,208
Commercial Real Estate          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 487,374   487,374   331,419
2024/2023 298,815   298,815   372,200
2023/2022 376,658   376,658   894,467
2022/2021 871,814   871,814   677,123
2021/2020 723,303   723,303   311,421
Prior 1,658,993   1,658,993   1,740,968
Revolving Loans Amortized Cost Basis 89,236   89,236   128,691
Revolving Loans Converted to Term Loans Amortized Cost Basis 7,513   7,513   7,703
Financing Receivable, before Allowance for Credit Loss, Total 4,513,706   4,513,706   4,463,992
Current period gross charge-offs:          
Prior, Current period gross charge-offs         400
Total, Current period gross charge-offs   $ 400   $ 400 400
Commercial Real Estate | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 487,374   487,374   322,405
2024/2023 289,898   289,898   369,948
2023/2022 374,448   374,448   832,005
2022/2021 768,901   768,901   634,722
2021/2020 680,910   680,910   308,156
Prior 1,622,149   1,622,149   1,720,243
Revolving Loans Amortized Cost Basis 77,525   77,525   116,682
Revolving Loans Converted to Term Loans Amortized Cost Basis 7,513   7,513   7,703
Financing Receivable, before Allowance for Credit Loss, Total 4,308,718   4,308,718   4,311,864
Commercial Real Estate | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024         9,014
2024/2023 3,336   3,336   2,252
2023/2022 1,675   1,675   7,510
2022/2021 45,579   45,579   41,399
2021/2020 41,394   41,394   3,265
Prior 20,943   20,943   10,860
Revolving Loans Amortized Cost Basis 11,007   11,007   11,861
Financing Receivable, before Allowance for Credit Loss, Total 123,934   123,934   86,161
Commercial Real Estate | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2024/2023 5,581   5,581    
2023/2022 535   535   54,952
2022/2021 57,334   57,334   1,002
2021/2020 999   999    
Prior 15,776   15,776   9,732
Revolving Loans Amortized Cost Basis 704   704   148
Financing Receivable, before Allowance for Credit Loss, Total 80,929   80,929   65,834
Commercial Real Estate | Other Indicator          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Prior 125   125   133
Financing Receivable, before Allowance for Credit Loss, Total 125   125   133
Construction          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 45,321   45,321   104,065
2024/2023 186,881   186,881   208,070
2023/2022 217,624   217,624   342,861
2022/2021 267,661   267,661   188,243
2021/2020 89,775   89,775   42,795
Prior 50,092   50,092   16,623
Revolving Loans Amortized Cost Basis 24,108   24,108   15,669
Financing Receivable, before Allowance for Credit Loss, Total 881,462   881,462   918,326
Construction | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 40,387   40,387   91,583
2024/2023 174,819   174,819   198,382
2023/2022 211,886   211,886   332,000
2022/2021 234,984   234,984   186,682
2021/2020 88,827   88,827   41,596
Prior 47,257   47,257   13,824
Revolving Loans Amortized Cost Basis 23,417   23,417   14,972
Financing Receivable, before Allowance for Credit Loss, Total 821,577   821,577   879,039
Construction | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2022/2021 27,965   27,965    
Prior 130   130   155
Financing Receivable, before Allowance for Credit Loss, Total 28,095   28,095   155
Construction | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Prior 904   904    
Financing Receivable, before Allowance for Credit Loss, Total 904   904    
Construction | Other Indicator          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 4,934   4,934   12,482
2024/2023 12,062   12,062   9,688
2023/2022 5,738   5,738   10,861
2022/2021 4,712   4,712   1,561
2021/2020 948   948   1,199
Prior 1,801   1,801   2,644
Revolving Loans Amortized Cost Basis 691   691   697
Financing Receivable, before Allowance for Credit Loss, Total 30,886   30,886   39,132
Lease financing          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 106,920   106,920   154,272
2024/2023 87,887   87,887   102,249
2023/2022 95,015   95,015   61,215
2022/2021 47,302   47,302   14,548
2021/2020 11,546   11,546   17,703
Prior 95,610   95,610   84,663
Financing Receivable, before Allowance for Credit Loss, Total 444,280   444,280   434,650
Current period gross charge-offs:          
2024/2023, Current period gross charge-offs     662    
Total, Current period gross charge-offs 580   662    
Lease financing | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 106,920   106,920   149,615
2024/2023 83,244   83,244   101,684
2023/2022 94,376   94,376   60,898
2022/2021 47,063   47,063   14,328
2021/2020 11,403   11,403   17,703
Prior 95,610   95,610   84,663
Financing Receivable, before Allowance for Credit Loss, Total 438,616   438,616   428,891
Lease financing | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2023/2022 191   191    
2022/2021         220
2021/2020 143   143    
Financing Receivable, before Allowance for Credit Loss, Total 334   334   220
Lease financing | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024         4,657
2024/2023 4,643   4,643   565
2023/2022 448   448   317
2022/2021 239   239    
Financing Receivable, before Allowance for Credit Loss, Total 5,330   5,330   5,539
Commercial Lending          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 819,101   819,101   771,676
2024/2023 711,110   711,110   767,386
2023/2022 755,868   755,868   1,500,218
2022/2021 1,316,637   1,316,637   1,132,507
2021/2020 981,352   981,352   391,068
Prior 2,063,949   2,063,949   2,102,088
Revolving Loans Amortized Cost Basis 1,197,968   1,197,968   1,377,414
Revolving Loans Converted to Term Loans Amortized Cost Basis 20,967   20,967   22,039
Financing Receivable, before Allowance for Credit Loss, Total $ 7,866,952   7,866,952   8,064,396
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     1    
2024/2023, Current period gross charge-offs     722   578
2023/2022, Current period gross charge-offs     224   335
2022/2021, Current period gross charge-offs     528   105
2021/2020, Current period gross charge-offs     356   221
Prior, Current period gross charge-offs     2,054   2,776
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     30    
Total, Current period gross charge-offs     $ 3,915   $ 4,015