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Allowance for Credit Losses - Credit Quality Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing Receivable, before Allowance for Credit Loss, Total $ 14,353,497 $ 14,092,012  
Current period gross charge-offs:      
Total, Current period gross charge-offs 23,506 20,888 $ 23,623
Loss      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing Receivable, before Allowance for Credit Loss, Total 0 0  
Residential Lending: Residential Mortgage      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 278,361 687,599  
2022/2021 656,256 1,227,369  
2021/2020 1,169,793 677,025  
2020/2019 633,900 309,308  
2019/2018 283,560 217,050  
Prior 1,251,365 1,174,681  
Revolving Loans Amortized Cost Basis 10,080 9,202  
Revolving Loans Converted to Term Loans Amortized Cost Basis   554  
Financing Receivable, before Allowance for Credit Loss, Total 4,283,315 4,302,788  
Residential Lending: Residential Mortgage | 740 and greater      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 211,598 557,636  
2022/2021 529,296 1,064,444  
2021/2020 999,522 560,463  
2020/2019 529,881 245,241  
2019/2018 227,058 165,258  
Prior 987,251 920,100  
Financing Receivable, before Allowance for Credit Loss, Total 3,484,606 3,513,142  
Residential Lending: Residential Mortgage | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 36,975 73,929  
2022/2021 67,205 112,672  
2021/2020 117,337 82,416  
2020/2019 68,122 40,355  
2019/2018 33,148 22,126  
Prior 130,387 130,508  
Financing Receivable, before Allowance for Credit Loss, Total 453,174 462,006  
Residential Lending: Residential Mortgage | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 3,544 12,320  
2022/2021 16,395 13,804  
2021/2020 19,184 9,881  
2020/2019 12,811 3,649  
2019/2018 4,096 3,054  
Prior 38,987 35,441  
Financing Receivable, before Allowance for Credit Loss, Total 95,017 78,149  
Residential Lending: Residential Mortgage | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 1,305 2,455  
2022/2021 6,521 2,246  
2021/2020 1,917 1,791  
2020/2019 2,492 263  
2019/2018 398 601  
Prior 11,679 6,955  
Financing Receivable, before Allowance for Credit Loss, Total 24,312 14,311  
Residential Lending: Residential Mortgage | Less than 550      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2022/2021   1,321  
2021/2020 2,909 367  
2020/2019 2,017    
2019/2018 582 966  
Prior 6,439 5,304  
Financing Receivable, before Allowance for Credit Loss, Total 11,947 7,958  
Residential Lending: Residential Mortgage | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 9,137 22,289  
2022/2021 19,311 14,671  
2021/2020 11,492 6,820  
2020/2019 6,043 10,599  
2019/2018 9,679 15,921  
Prior 51,109 47,245  
Financing Receivable, before Allowance for Credit Loss, Total 106,771 117,545  
Residential Lending: Residential Mortgage | Fico Other      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 15,802 18,970  
2022/2021 17,528 18,211  
2021/2020 17,432 15,287  
2020/2019 12,534 9,201  
2019/2018 8,599 9,124  
Prior 25,513 29,128  
Revolving Loans Amortized Cost Basis 10,080 9,202  
Revolving Loans Converted to Term Loans Amortized Cost Basis   554  
Financing Receivable, before Allowance for Credit Loss, Total 107,488 109,677  
Residential Lending: Home Equity Line      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis   1,046,968  
Revolving Loans Converted to Term Loans Amortized Cost Basis   8,383  
Financing Receivable, before Allowance for Credit Loss, Total   1,055,351  
Residential Lending: 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 964,932 817,123  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,511 2,059  
Financing Receivable, before Allowance for Credit Loss, Total 966,443 819,182  
Residential Lending: Home Equity Line | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 151,716 171,117  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,920 2,714  
Financing Receivable, before Allowance for Credit Loss, Total 153,636 173,831  
Residential Lending: Home Equity Line | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 36,541 45,368  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,189 2,100  
Financing Receivable, before Allowance for Credit Loss, Total 37,730 47,468  
Residential Lending: Home Equity Line | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 9,896 7,485  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,012 1,029  
Financing Receivable, before Allowance for Credit Loss, Total 10,908 8,514  
Residential Lending: 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 4,488 1,151  
Revolving Loans Converted to Term Loans Amortized Cost Basis 100 481  
Financing Receivable, before Allowance for Credit Loss, Total 4,588 1,632  
Residential Lending: Home Equity Line | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 1,283 4,724  
Financing Receivable, before Allowance for Credit Loss, Total 1,283 4,724  
Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 1,243,109 2,560,433  
2022/2021 2,491,897 2,880,346  
2021/2020 2,678,220 1,319,250  
2020/2019 1,169,781 1,311,719  
2019/2018 1,122,038 825,528  
Prior 2,950,761 2,699,183  
Revolving Loans Amortized Cost Basis 2,685,919 2,467,297  
Revolving Loans Converted to Term Loans Amortized Cost Basis 11,772 28,256  
Financing Receivable, before Allowance for Credit Loss, Total 14,353,497 14,092,012  
Current period gross charge-offs:      
2023, Current period gross charge-offs 769    
2022, Current period gross charge-offs 2,470    
2021, Current period gross charge-offs 2,210    
2020, Current period gross charge-offs 1,229    
2019, Current period gross charge-offs 4,484    
Prior, Current period gross charge-offs 5,696    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 6,063    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 585    
Total, Current period gross charge-offs 23,506    
Residential mortgage      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing Receivable, before Allowance for Credit Loss, Total 4,283,315 4,302,788  
Current period gross charge-offs:      
Prior, Current period gross charge-offs 122    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 273    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 19    
Total, Current period gross charge-offs 414 103 632
Residential mortgage | Residential Lending: Residential Mortgage      
Current period gross charge-offs:      
Total, Current period gross charge-offs 122    
Residential mortgage | Residential Lending: Home Equity Line      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 0 687,599  
2022/2021 0 1,227,369  
2021/2020 0 677,025  
2020/2019 0 309,308  
2019/2018 0 217,050  
Prior 0 1,174,681  
Revolving Loans Amortized Cost Basis   1,056,170  
Revolving Loans Converted to Term Loans Amortized Cost Basis   8,937  
Financing Receivable, before Allowance for Credit Loss, Total   5,358,139  
Current period gross charge-offs:      
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 273    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 19    
Total, Current period gross charge-offs 292    
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 1,174,588 1,055,351  
Consumer      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 198,207 335,116  
2022/2021 246,444 218,940  
2021/2020 144,576 112,885  
2020/2019 66,514 105,789  
2019/2018 51,677 57,786  
Prior 24,321 28,131  
Revolving Loans Amortized Cost Basis 375,309 361,126  
Revolving Loans Converted to Term Loans Amortized Cost Basis 2,853 3,161  
Financing Receivable, before Allowance for Credit Loss, Total 1,109,901 1,222,934  
Current period gross charge-offs:      
2023, Current period gross charge-offs 639    
2022, Current period gross charge-offs 2,400    
2021, Current period gross charge-offs 2,135    
2020, Current period gross charge-offs 1,142    
2019, Current period gross charge-offs 1,816    
Prior, Current period gross charge-offs 2,622    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 5,790    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 566    
Total, Current period gross charge-offs 17,110 16,848 16,634
Consumer | 740 and greater      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 92,117 200,887  
2022/2021 128,358 111,047  
2021/2020 76,148 53,534  
2020/2019 33,507 43,912  
2019/2018 21,819 24,951  
Prior 8,970 8,432  
Revolving Loans Amortized Cost Basis 123,592 125,126  
Revolving Loans Converted to Term Loans Amortized Cost Basis 155 185  
Financing Receivable, before Allowance for Credit Loss, Total 484,666 568,074  
Consumer | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 68,865 99,787  
2022/2021 71,031 67,140  
2021/2020 37,925 37,260  
2020/2019 17,116 31,751  
2019/2018 13,270 15,874  
Prior 5,690 7,665  
Revolving Loans Amortized Cost Basis 76,645 72,101  
Revolving Loans Converted to Term Loans Amortized Cost Basis 401 514  
Financing Receivable, before Allowance for Credit Loss, Total 290,943 332,092  
Consumer | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 28,533 25,949  
2022/2021 29,229 29,587  
2021/2020 16,919 14,226  
2020/2019 7,843 16,872  
2019/2018 7,972 9,672  
Prior 4,624 6,488  
Revolving Loans Amortized Cost Basis 35,210 31,854  
Revolving Loans Converted to Term Loans Amortized Cost Basis 781 937  
Financing Receivable, before Allowance for Credit Loss, Total 131,111 135,585  
Consumer | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 4,996 3,017  
2022/2021 10,859 5,475  
2021/2020 7,760 5,226  
2020/2019 4,917 8,056  
2019/2018 4,651 5,396  
Prior 2,986 3,924  
Revolving Loans Amortized Cost Basis 13,223 11,269  
Revolving Loans Converted to Term Loans Amortized Cost Basis 925 854  
Financing Receivable, before Allowance for Credit Loss, Total 50,317 43,217  
Consumer | Less than 550      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 1,790 656  
2022/2021 6,370 1,351  
2021/2020 4,842 2,286  
2020/2019 2,796 3,779  
2019/2018 2,905 1,869  
Prior 2,040 1,593  
Revolving Loans Amortized Cost Basis 5,222 3,541  
Revolving Loans Converted to Term Loans Amortized Cost Basis 455 443  
Financing Receivable, before Allowance for Credit Loss, Total 26,420 15,518  
Consumer | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 1,545 3,205  
2022/2021 229 258  
2020/2019   51  
2019/2018 1 24  
Prior 10 29  
Revolving Loans Amortized Cost Basis 42,933 38,805  
Revolving Loans Converted to Term Loans Amortized Cost Basis 136 227  
Financing Receivable, before Allowance for Credit Loss, Total 44,854 42,599  
Consumer | Fico Other      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 361 1,615  
2022/2021 368 4,082  
2021/2020 982 353  
2020/2019 335 1,368  
2019/2018 1,059    
Prior 1    
Revolving Loans Amortized Cost Basis 78,484 78,430  
Revolving Loans Converted to Term Loans Amortized Cost Basis   1  
Financing Receivable, before Allowance for Credit Loss, Total 81,590 85,849  
Residential Mortgage loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 278,361    
2022/2021 656,256    
2021/2020 1,169,793    
2020/2019 633,900    
2019/2018 283,560    
Prior 1,251,365    
Revolving Loans Amortized Cost Basis 1,178,936    
Revolving Loans Converted to Term Loans Amortized Cost Basis 5,732    
Financing Receivable, before Allowance for Credit Loss, Total 5,457,903    
Residential Mortgage loans | Residential Lending: Residential Mortgage      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 0    
2022/2021 0    
2021/2020 0    
2020/2019 0    
2019/2018 0    
Revolving Loans Amortized Cost Basis 0    
Revolving Loans Converted to Term Loans Amortized Cost Basis 0    
Current period gross charge-offs:      
Prior, Current period gross charge-offs 122    
Total, Current period gross charge-offs 122    
Home Equity Loans and Lines of Credit      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 1,168,856    
Revolving Loans Converted to Term Loans Amortized Cost Basis 5,732    
Financing Receivable, before Allowance for Credit Loss, Total 1,174,588    
Commercial and Industrial      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 101,818 380,244  
2022/2021 329,672 430,817  
2021/2020 351,148 61,473  
2020/2019 36,453 177,922  
2019/2018 151,313 54,209  
Prior 144,925 140,740  
Revolving Loans Amortized Cost Basis 1,048,183 974,334  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,837 16,158  
Financing Receivable, before Allowance for Credit Loss, Total 2,165,349 2,235,897  
Current period gross charge-offs:      
2023, Current period gross charge-offs 130    
2022, Current period gross charge-offs 70    
2021, Current period gross charge-offs 75    
2020, Current period gross charge-offs 87    
2019, Current period gross charge-offs 168    
Prior, Current period gross charge-offs 2,952    
Total, Current period gross charge-offs 3,482 2,012 5,949
Commercial and Industrial | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 85,839 359,881  
2022/2021 273,663 422,567  
2021/2020 346,024 54,656  
2020/2019 32,753 170,222  
2019/2018 146,893 51,476  
Prior 141,681 137,257  
Revolving Loans Amortized Cost Basis 971,065 894,384  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,823 15,715  
Financing Receivable, before Allowance for Credit Loss, Total 1,999,741 2,106,158  
Commercial and Industrial | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 1 2,059  
2022/2021 44,069 240  
2021/2020 80 1,371  
2020/2019 653 2,643  
2019/2018 1,032 184  
Prior 1,290 1,431  
Revolving Loans Amortized Cost Basis 22,807 22,897  
Revolving Loans Converted to Term Loans Amortized Cost Basis 14 378  
Financing Receivable, before Allowance for Credit Loss, Total 69,946 31,203  
Commercial and Industrial | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022   625  
2022/2021 342 289  
2021/2020 230 1,117  
2020/2019 677 1,092  
2019/2018 1,686 668  
Prior 829 885  
Revolving Loans Amortized Cost Basis 8,330 14,733  
Revolving Loans Converted to Term Loans Amortized Cost Basis   65  
Financing Receivable, before Allowance for Credit Loss, Total 12,094 19,474  
Commercial and Industrial | Other Indicator      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 15,978 17,679  
2022/2021 11,598 7,721  
2021/2020 4,814 4,329  
2020/2019 2,370 3,965  
2019/2018 1,702 1,881  
Prior 1,125 1,167  
Revolving Loans Amortized Cost Basis 45,981 42,320  
Financing Receivable, before Allowance for Credit Loss, Total 83,568 79,062  
Commercial Real Estate      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 348,881 889,753  
2022/2021 885,480 695,882  
2021/2020 719,685 320,566  
2020/2019 338,888 580,465  
2019/2018 539,949 397,690  
Prior 1,429,298 1,199,197  
Revolving Loans Amortized Cost Basis 76,712 48,756  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,350    
Financing Receivable, before Allowance for Credit Loss, Total 4,340,243 4,132,309  
Current period gross charge-offs:      
2023, Current period gross charge-offs 0    
2022, Current period gross charge-offs 0    
2021, Current period gross charge-offs 0    
2020, Current period gross charge-offs 0    
2019, Current period gross charge-offs 2,500    
Prior, Current period gross charge-offs 0    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 0    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 0    
Total, Current period gross charge-offs 2,500 750 $ 66
Commercial Real Estate | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 346,369 889,583  
2022/2021 872,783 695,882  
2021/2020 676,362 319,838  
2020/2019 337,529 565,587  
2019/2018 523,446 395,474  
Prior 1,414,613 1,173,163  
Revolving Loans Amortized Cost Basis 74,238 48,081  
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,350    
Financing Receivable, before Allowance for Credit Loss, Total 4,246,690 4,087,608  
Commercial Real Estate | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 2,307 170  
2022/2021 7,618    
2021/2020 41,320 555  
2020/2019 1,359 14,878  
2019/2018 13,550 512  
Prior 11,998 11,398  
Revolving Loans Amortized Cost Basis 819 675  
Financing Receivable, before Allowance for Credit Loss, Total 78,971 28,188  
Commercial Real Estate | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 205    
2022/2021 5,079    
2021/2020 2,003 173  
2019/2018 2,953 1,704  
Prior 2,545 14,485  
Revolving Loans Amortized Cost Basis 1,655    
Financing Receivable, before Allowance for Credit Loss, Total 14,440 16,362  
Commercial Real Estate | Other Indicator      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Prior 142 151  
Financing Receivable, before Allowance for Credit Loss, Total 142 151  
Construction      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 169,160 154,158  
2022/2021 290,659 282,875  
2021/2020 273,924 101,109  
2020/2019 62,200 99,422  
2019/2018 65,238 92,778  
Prior 32,332 87,390  
Revolving Loans Amortized Cost Basis 6,779 26,911  
Financing Receivable, before Allowance for Credit Loss, Total 900,292 844,643  
Current period gross charge-offs:      
2023, Current period gross charge-offs 0    
2022, Current period gross charge-offs 0    
2021, Current period gross charge-offs 0    
2020, Current period gross charge-offs 0    
2019, Current period gross charge-offs 0    
Prior, Current period gross charge-offs 0    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 0    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 0    
Total, Current period gross charge-offs 0    
Construction | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 156,432 124,464  
2022/2021 269,623 261,536  
2021/2020 265,674 96,423  
2020/2019 60,057 97,000  
2019/2018 63,018 88,973  
Prior 27,847 84,704  
Revolving Loans Amortized Cost Basis 6,070 25,957  
Financing Receivable, before Allowance for Credit Loss, Total 848,721 779,057  
Construction | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2020/2019   221  
2019/2018 189    
Prior 665    
Financing Receivable, before Allowance for Credit Loss, Total 854 221  
Construction | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2019/2018   21  
Prior   490  
Financing Receivable, before Allowance for Credit Loss, Total   511  
Construction | Other Indicator      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 12,728 29,694  
2022/2021 21,036 21,339  
2021/2020 8,250 4,686  
2020/2019 2,143 2,201  
2019/2018 2,031 3,784  
Prior 3,820 2,196  
Revolving Loans Amortized Cost Basis 709 954  
Financing Receivable, before Allowance for Credit Loss, Total 50,717 64,854  
Lease financing      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 146,682 113,563  
2022/2021 83,386 24,463  
2021/2020 19,094 46,192  
2020/2019 31,826 38,813  
2019/2018 30,301 6,015  
Prior 68,520 69,044  
Financing Receivable, before Allowance for Credit Loss, Total 379,809 298,090  
Current period gross charge-offs:      
2023, Current period gross charge-offs 0    
2022, Current period gross charge-offs 0    
2021, Current period gross charge-offs 0    
2020, Current period gross charge-offs 0    
2019, Current period gross charge-offs 0    
Prior, Current period gross charge-offs 0    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 0    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 0    
Total, Current period gross charge-offs 0    
Lease financing | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 145,914 113,563  
2022/2021 82,833 24,052  
2021/2020 18,680 43,497  
2020/2019 31,791 37,502  
2019/2018 30,299 6,004  
Prior 68,520 67,687  
Financing Receivable, before Allowance for Credit Loss, Total 378,037 292,305  
Lease financing | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 56    
2022/2021 137 411  
2021/2020 414 2,498  
2020/2019 35 1,299  
Financing Receivable, before Allowance for Credit Loss, Total 642 4,208  
Lease financing | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 712    
2022/2021 416    
2021/2020   197  
2020/2019   12  
2019/2018 2 11  
Prior   1,357  
Financing Receivable, before Allowance for Credit Loss, Total 1,130 1,577  
Commercial Lending      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 766,541 1,537,718  
2022/2021 1,589,197 1,434,037  
2021/2020 1,363,851 529,340  
2020/2019 469,367 896,622  
2019/2018 786,801 550,692  
Prior 1,675,075 1,496,371  
Revolving Loans Amortized Cost Basis 1,131,674 1,050,001  
Revolving Loans Converted to Term Loans Amortized Cost Basis 3,187 16,158  
Financing Receivable, before Allowance for Credit Loss, Total 7,785,693 $ 7,510,939  
Current period gross charge-offs:      
2023, Current period gross charge-offs 130    
2022, Current period gross charge-offs 70    
2021, Current period gross charge-offs 75    
2020, Current period gross charge-offs 87    
2019, Current period gross charge-offs 2,668    
Prior, Current period gross charge-offs 2,952    
Total, Current period gross charge-offs $ 5,982