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Allowance for Credit Losses - Credit Quality Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 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 $ 14,351,869   $ 14,351,869   $ 14,408,258
Current period gross charge-offs:          
Total, Current period gross charge-offs 5,329 $ 4,859 11,827 $ 10,622  
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 99,901   99,901   210,828
2024/2023 193,406   193,406   247,668
2023/2022 237,049   237,049   622,840
2022/2021 596,946   596,946   1,103,603
2021/2020 1,069,157   1,069,157   591,758
Prior 1,886,306   1,886,306   1,389,038
Revolving Loans Amortized Cost Basis 3,062   3,062   2,419
Financing Receivable, before Allowance for Credit Loss, Total 4,085,827   4,085,827   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 75,024   75,024   168,067
2024/2023 152,336   152,336   187,710
2023/2022 184,091   184,091   492,845
2022/2021 466,879   466,879   946,390
2021/2020 889,999   889,999   498,443
Prior 1,539,891   1,539,891   1,115,557
Financing Receivable, before Allowance for Credit Loss, Total 3,308,220   3,308,220   3,409,012
Real estate loan | 680 - 739          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 7,541   7,541   18,368
2024/2023 20,371   20,371   34,901
2023/2022 27,773   27,773   65,735
2022/2021 80,105   80,105   103,622
2021/2020 119,482   119,482   57,369
Prior 192,183   192,183   138,469
Financing Receivable, before Allowance for Credit Loss, Total 447,455   447,455   418,464
Real estate loan | 620 - 679          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 4,787   4,787   1,726
2024/2023 1,274   1,274   4,380
2023/2022 5,446   5,446   23,556
2022/2021 8,256   8,256   19,355
2021/2020 25,983   25,983   14,058
Prior 37,856   37,856   40,471
Financing Receivable, before Allowance for Credit Loss, Total 83,602   83,602   103,546
Real estate loan | 550 - 619          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2024/2023 1,508   1,508   820
2023/2022 444   444   6,526
2022/2021 7,226   7,226   7,745
2021/2020 6,840   6,840   4,042
Prior 26,115   26,115   13,783
Financing Receivable, before Allowance for Credit Loss, Total 42,133   42,133   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 1,439   1,439   775
2022/2021 1,547   1,547   2,264
2021/2020 3,123   3,123   1,559
Prior 7,033   7,033   6,342
Financing Receivable, before Allowance for Credit Loss, Total 13,298   13,298   11,674
Real estate loan | No Score          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 1,471   1,471   13,211
2024/2023 9,893   9,893   6,719
2023/2022 6,036   6,036   16,839
2022/2021 16,659   16,659   9,916
2021/2020 9,758   9,758   5,518
Prior 47,459   47,459   45,604
Financing Receivable, before Allowance for Credit Loss, Total 91,276   91,276   97,807
Real estate loan | Fico Other          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 11,078   11,078   9,456
2024/2023 7,868   7,868   12,404
2023/2022 11,820   11,820   16,564
2022/2021 16,274   16,274   14,311
2021/2020 13,972   13,972   10,769
Prior 35,769   35,769   28,812
Revolving Loans Amortized Cost Basis 3,062   3,062   2,419
Financing Receivable, before Allowance for Credit Loss, Total 99,843   99,843   94,735
Home Equity Line          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Revolving Loans Amortized Cost Basis 1,157,419   1,157,419   1,146,858
Revolving Loans Converted to Term Loans Amortized Cost Basis 4,457   4,457   4,881
Financing Receivable, before Allowance for Credit Loss, Total 1,161,876   1,161,876   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 926,318   926,318   925,749
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,275   1,275   1,652
Financing Receivable, before Allowance for Credit Loss, Total 927,593   927,593   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 173,339   173,339   161,523
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,656   1,656   1,030
Financing Receivable, before Allowance for Credit Loss, Total 174,995   174,995   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 34,428   34,428   39,235
Revolving Loans Converted to Term Loans Amortized Cost Basis 579   579   1,220
Financing Receivable, before Allowance for Credit Loss, Total 35,007   35,007   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 14,006   14,006   13,006
Revolving Loans Converted to Term Loans Amortized Cost Basis 552   552   416
Financing Receivable, before Allowance for Credit Loss, Total 14,558   14,558   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 8,129   8,129   5,993
Revolving Loans Converted to Term Loans Amortized Cost Basis 395   395   563
Financing Receivable, before Allowance for Credit Loss, Total 8,524   8,524   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 1,199   1,199   1,352
Financing Receivable, before Allowance for Credit Loss, Total 1,199   1,199   1,352
Total Loans and Leases          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 573,482   573,482   1,183,823
2024/2023 1,073,205   1,073,205   1,155,877
2023/2022 1,114,201   1,114,201   2,286,710
2022/2021 2,104,067   2,104,067   2,322,566
2021/2020 2,175,200   2,175,200   1,013,551
Prior 4,214,463   4,214,463   3,513,354
Revolving Loans Amortized Cost Basis 3,060,962   3,060,962   2,902,520
Revolving Loans Converted to Term Loans Amortized Cost Basis 36,289   36,289   29,857
Financing Receivable, before Allowance for Credit Loss, Total 14,351,869   14,351,869   14,408,258
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     36   732
2024/2023, Current period gross charge-offs     1,325   2,633
2023/2022, Current period gross charge-offs     1,093   2,941
2022/2021, Current period gross charge-offs     1,188   1,493
2021/2020, Current period gross charge-offs     862   897
Prior, Current period gross charge-offs     2,801   5,461
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     4,026   7,168
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs     496   692
Total, Current period gross charge-offs     11,827   22,017
Residential mortgage          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 99,901   99,901    
2024/2023 193,406   193,406    
2023/2022 237,049   237,049    
2022/2021 596,946   596,946    
2021/2020 1,069,157   1,069,157    
Prior 1,886,306   1,886,306    
Revolving Loans Amortized Cost Basis 1,160,481   1,160,481    
Revolving Loans Converted to Term Loans Amortized Cost Basis 4,457   4,457    
Financing Receivable, before Allowance for Credit Loss, Total 5,247,703   5,247,703    
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 4,085,827   4,085,827   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 1,161,876   1,161,876   1,151,739
Consumer          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 128,069   128,069   201,319
2024/2023 175,864   175,864   140,823
2023/2022 115,293   115,293   163,652
2022/2021 128,216   128,216   86,456
2021/2020 62,479   62,479   30,725
Prior 28,489   28,489   22,228
Revolving Loans Amortized Cost Basis 369,615   369,615   375,829
Revolving Loans Converted to Term Loans Amortized Cost Basis 3,100   3,100   2,937
Financing Receivable, before Allowance for Credit Loss, Total 1,011,125   1,011,125   1,023,969
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     35   732
2024/2023, Current period gross charge-offs     1,282   2,055
2023/2022, Current period gross charge-offs     998   2,606
2022/2021, Current period gross charge-offs     986   1,388
2021/2020, Current period gross charge-offs     506   676
Prior, Current period gross charge-offs     1,299   2,685
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     3,966   7,168
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs     496   692
Total, Current period gross charge-offs 4,543 4,182 9,568 9,036 18,002
Consumer | 740 and greater          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 61,761   61,761   92,329
2024/2023 75,352   75,352   65,738
2023/2022 53,350   53,350   84,007
2022/2021 65,835   65,835   44,192
2021/2020 31,177   31,177   14,607
Prior 10,411   10,411   6,897
Revolving Loans Amortized Cost Basis 95,804   95,804   101,938
Revolving Loans Converted to Term Loans Amortized Cost Basis 96   96   106
Financing Receivable, before Allowance for Credit Loss, Total 393,786   393,786   409,814
Consumer | 680 - 739          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 41,443   41,443   68,371
2024/2023 60,382   60,382   46,533
2023/2022 35,296   35,296   44,504
2022/2021 33,253   33,253   21,829
2021/2020 15,631   15,631   7,652
Prior 6,463   6,463   5,278
Revolving Loans Amortized Cost Basis 84,324   84,324   86,935
Revolving Loans Converted to Term Loans Amortized Cost Basis 568   568   509
Financing Receivable, before Allowance for Credit Loss, Total 277,360   277,360   281,611
Consumer | 620 - 679          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 20,622   20,622   30,618
2024/2023 26,812   26,812   17,728
2023/2022 14,646   14,646   19,942
2022/2021 15,734   15,734   10,252
2021/2020 7,570   7,570   4,195
Prior 4,810   4,810   4,152
Revolving Loans Amortized Cost Basis 50,024   50,024   50,544
Revolving Loans Converted to Term Loans Amortized Cost Basis 817   817   775
Financing Receivable, before Allowance for Credit Loss, Total 141,035   141,035   138,206
Consumer | 550 - 619          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 2,805   2,805   6,108
2024/2023 9,190   9,190   6,768
2023/2022 7,165   7,165   9,312
2022/2021 8,375   8,375   5,702
2021/2020 4,849   4,849   2,574
Prior 3,479   3,479   3,106
Revolving Loans Amortized Cost Basis 16,574   16,574   15,641
Revolving Loans Converted to Term Loans Amortized Cost Basis 888   888   778
Financing Receivable, before Allowance for Credit Loss, Total 53,325   53,325   49,989
Consumer | Less than 550          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 664   664   2,012
2024/2023 3,896   3,896   3,950
2023/2022 4,177   4,177   5,572
2022/2021 4,758   4,758   3,594
2021/2020 2,669   2,669   1,591
Prior 2,281   2,281   1,830
Revolving Loans Amortized Cost Basis 5,594   5,594   5,311
Revolving Loans Converted to Term Loans Amortized Cost Basis 545   545   593
Financing Receivable, before Allowance for Credit Loss, Total 24,584   24,584   24,453
Consumer | No Score          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 545   545   1,881
2024/2023 232   232   106
2023/2022 58   58   38
2022/2021 21   21    
2021/2020         7
Prior 13   13   9
Revolving Loans Amortized Cost Basis 38,412   38,412   38,932
Revolving Loans Converted to Term Loans Amortized Cost Basis 186   186   176
Financing Receivable, before Allowance for Credit Loss, Total 39,467   39,467   41,149
Consumer | Fico Other          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 229   229    
2023/2022 601   601   277
2022/2021 240   240   887
2021/2020 583   583   99
Prior 1,032   1,032   956
Revolving Loans Amortized Cost Basis 78,883   78,883   76,528
Financing Receivable, before Allowance for Credit Loss, Total 81,568   81,568   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 87,223   87,223   181,920
2024/2023 155,681   155,681   84,867
2023/2022 73,653   73,653   201,675
2022/2021 175,502   175,502   252,593
2021/2020 196,945   196,945   19,149
Prior 263,817   263,817   259,834
Revolving Loans Amortized Cost Basis 1,396,245   1,396,245   1,233,054
Revolving Loans Converted to Term Loans Amortized Cost Basis 21,144   21,144   14,336
Financing Receivable, before Allowance for Credit Loss, Total 2,370,210   2,370,210   2,247,428
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     1    
2024/2023, Current period gross charge-offs     43   578
2023/2022, Current period gross charge-offs     95   335
2022/2021, Current period gross charge-offs     202   105
2021/2020, Current period gross charge-offs     356   221
Prior, Current period gross charge-offs     1,420   2,376
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     30    
Total, Current period gross charge-offs 688 $ 677 2,147 $ 1,586 3,615
Commercial and Industrial | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 75,108   75,108   163,980
2024/2023 143,460   143,460   73,554
2023/2022 64,613   64,613   185,433
2022/2021 158,143   158,143   249,532
2021/2020 194,932   194,932   17,775
Prior 239,648   239,648   256,119
Revolving Loans Amortized Cost Basis 1,282,369   1,282,369   1,118,075
Revolving Loans Converted to Term Loans Amortized Cost Basis 21,144   21,144   14,336
Financing Receivable, before Allowance for Credit Loss, Total 2,179,417   2,179,417   2,078,804
Commercial and Industrial | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 407   407   808
2024/2023 874   874   2,385
2023/2022 2,114   2,114   1,209
2022/2021 1,589   1,589   68
2021/2020 123   123   300
Prior 21,393   21,393   1,322
Revolving Loans Amortized Cost Basis 24,455   24,455   41,520
Financing Receivable, before Allowance for Credit Loss, Total 50,955   50,955   47,612
Commercial and Industrial | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 537   537    
2023/2022         8,096
2022/2021 10,554   10,554   196
2021/2020 39   39   309
Prior 1,193   1,193   1,114
Revolving Loans Amortized Cost Basis 42,079   42,079   26,089
Financing Receivable, before Allowance for Credit Loss, Total 54,402   54,402   35,804
Commercial and Industrial | Other Indicator          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 11,171   11,171   17,132
2024/2023 11,347   11,347   8,928
2023/2022 6,926   6,926   6,937
2022/2021 5,216   5,216   2,797
2021/2020 1,851   1,851   765
Prior 1,583   1,583   1,279
Revolving Loans Amortized Cost Basis 47,342   47,342   47,370
Financing Receivable, before Allowance for Credit Loss, Total 85,436   85,436   85,208
Commercial Real Estate          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 169,890   169,890   331,419
2024/2023 299,585   299,585   372,200
2023/2022 376,971   376,971   894,467
2022/2021 860,568   860,568   677,123
2021/2020 698,090   698,090   311,421
Prior 1,886,130   1,886,130   1,740,968
Revolving Loans Amortized Cost Basis 112,763   112,763   128,691
Revolving Loans Converted to Term Loans Amortized Cost Basis 7,588   7,588   7,703
Financing Receivable, before Allowance for Credit Loss, Total 4,411,585   4,411,585   4,463,992
Current period gross charge-offs:          
Prior, Current period gross charge-offs         400
Total, Current period gross charge-offs         400
Commercial Real Estate | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 169,890   169,890   322,405
2024/2023 290,636   290,636   369,948
2023/2022 374,749   374,749   832,005
2022/2021 795,676   795,676   634,722
2021/2020 655,689   655,689   308,156
Prior 1,822,004   1,822,004   1,720,243
Revolving Loans Amortized Cost Basis 101,260   101,260   116,682
Revolving Loans Converted to Term Loans Amortized Cost Basis 7,588   7,588   7,703
Financing Receivable, before Allowance for Credit Loss, Total 4,217,492   4,217,492   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 1,682   1,682   7,510
2022/2021 7,455   7,455   41,399
2021/2020 41,396   41,396   3,265
Prior 54,805   54,805   10,860
Revolving Loans Amortized Cost Basis 11,003   11,003   11,861
Financing Receivable, before Allowance for Credit Loss, Total 119,677   119,677   86,161
Commercial Real Estate | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2024/2023 5,613   5,613    
2023/2022 540   540   54,952
2022/2021 57,437   57,437   1,002
2021/2020 1,005   1,005    
Prior 9,193   9,193   9,732
Revolving Loans Amortized Cost Basis 500   500   148
Financing Receivable, before Allowance for Credit Loss, Total 74,288   74,288   65,834
Commercial Real Estate | Other Indicator          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Prior 128   128   133
Financing Receivable, before Allowance for Credit Loss, Total 128   128   133
Construction          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 13,028   13,028   104,065
2024/2023 156,164   156,164   208,070
2023/2022 214,176   214,176   342,861
2022/2021 290,283   290,283   188,243
2021/2020 135,955   135,955   42,795
Prior 52,842   52,842   16,623
Revolving Loans Amortized Cost Basis 21,858   21,858   15,669
Financing Receivable, before Allowance for Credit Loss, Total 884,306   884,306   918,326
Construction | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 10,471   10,471   91,583
2024/2023 141,948   141,948   198,382
2023/2022 207,877   207,877   332,000
2022/2021 285,083   285,083   186,682
2021/2020 134,469   134,469   41,596
Prior 49,647   49,647   13,824
Revolving Loans Amortized Cost Basis 21,163   21,163   14,972
Financing Receivable, before Allowance for Credit Loss, Total 850,658   850,658   879,039
Construction | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
Prior 138   138   155
Financing Receivable, before Allowance for Credit Loss, Total 138   138   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 2,557   2,557   12,482
2024/2023 14,216   14,216   9,688
2023/2022 6,299   6,299   10,861
2022/2021 5,200   5,200   1,561
2021/2020 1,486   1,486   1,199
Prior 2,153   2,153   2,644
Revolving Loans Amortized Cost Basis 695   695   697
Financing Receivable, before Allowance for Credit Loss, Total 32,606   32,606   39,132
Lease financing          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 75,371   75,371   154,272
2024/2023 92,505   92,505   102,249
2023/2022 97,059   97,059   61,215
2022/2021 52,552   52,552   14,548
2021/2020 12,574   12,574   17,703
Prior 96,879   96,879   84,663
Financing Receivable, before Allowance for Credit Loss, Total 426,940   426,940   434,650
Current period gross charge-offs:          
Prior, Current period gross charge-offs     82    
Total, Current period gross charge-offs 82   82    
Lease financing | Pass          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 75,371   75,371   149,615
2024/2023 87,087   87,087   101,684
2023/2022 96,362   96,362   60,898
2022/2021 52,286   52,286   14,328
2021/2020 12,405   12,405   17,703
Prior 96,879   96,879   84,663
Financing Receivable, before Allowance for Credit Loss, Total 420,390   420,390   428,891
Lease financing | Special Mention          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2023/2022 209   209    
2022/2021         220
2021/2020 169   169    
Financing Receivable, before Allowance for Credit Loss, Total 378   378   220
Lease financing | Substandard          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024         4,657
2024/2023 5,418   5,418   565
2023/2022 488   488   317
2022/2021 266   266    
Financing Receivable, before Allowance for Credit Loss, Total 6,172   6,172   5,539
Commercial Lending          
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]          
2025/2024 345,512   345,512   771,676
2024/2023 703,935   703,935   767,386
2023/2022 761,859   761,859   1,500,218
2022/2021 1,378,905   1,378,905   1,132,507
2021/2020 1,043,564   1,043,564   391,068
Prior 2,299,668   2,299,668   2,102,088
Revolving Loans Amortized Cost Basis 1,530,866   1,530,866   1,377,414
Revolving Loans Converted to Term Loans Amortized Cost Basis 28,732   28,732   22,039
Financing Receivable, before Allowance for Credit Loss, Total $ 8,093,041   8,093,041   8,064,396
Current period gross charge-offs:          
2025/2024, Current period gross charge-offs     1    
2024/2023, Current period gross charge-offs     43   578
2023/2022, Current period gross charge-offs     95   335
2022/2021, Current period gross charge-offs     202   105
2021/2020, Current period gross charge-offs     356   221
Prior, Current period gross charge-offs     1,502   2,776
Revolving Loans Amortized Cost Basis, Current period gross charge-offs     30    
Total, Current period gross charge-offs     $ 2,229   $ 4,015