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Allowance for Credit Losses - Credit Quality Information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing Receivable, before Allowance for Credit Loss, Total $ 14,221,272,000   $ 14,092,012,000
Current period gross charge-offs:      
Total, Current period gross charge-offs 5,830,000 $ 4,858,000  
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     687,599,000
2022/2021     1,227,369,000
2021/2020     677,025,000
2020/2019     309,308,000
2019/2018     217,050,000
Prior     1,174,681,000
Revolving Loans Amortized Cost Basis     9,202,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     554,000
Financing Receivable, before Allowance for Credit Loss, Total     4,302,788,000
Residential Lending: Residential Mortgage | 740 and greater      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     557,636,000
2022/2021     1,064,444,000
2021/2020     560,463,000
2020/2019     245,241,000
2019/2018     165,258,000
Prior     920,100,000
Financing Receivable, before Allowance for Credit Loss, Total     3,513,142,000
Residential Lending: Residential Mortgage | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     73,929,000
2022/2021     112,672,000
2021/2020     82,416,000
2020/2019     40,355,000
2019/2018     22,126,000
Prior     130,508,000
Financing Receivable, before Allowance for Credit Loss, Total     462,006,000
Residential Lending: Residential Mortgage | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     12,320,000
2022/2021     13,804,000
2021/2020     9,881,000
2020/2019     3,649,000
2019/2018     3,054,000
Prior     35,441,000
Financing Receivable, before Allowance for Credit Loss, Total     78,149,000
Residential Lending: Residential Mortgage | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     2,455,000
2022/2021     2,246,000
2021/2020     1,791,000
2020/2019     263,000
2019/2018     601,000
Prior     6,955,000
Financing Receivable, before Allowance for Credit Loss, Total     14,311,000
Residential Lending: Residential Mortgage | Less than 550      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2022/2021     1,321,000
2021/2020     367,000
2019/2018     966,000
Prior     5,304,000
Financing Receivable, before Allowance for Credit Loss, Total     7,958,000
Residential Lending: Residential Mortgage | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     22,289,000
2022/2021     14,671,000
2021/2020     6,820,000
2020/2019     10,599,000
2019/2018     15,921,000
Prior     47,245,000
Financing Receivable, before Allowance for Credit Loss, Total     117,545,000
Residential Lending: Residential Mortgage | Fico Other      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     18,970,000
2022/2021     18,211,000
2021/2020     15,287,000
2020/2019     9,201,000
2019/2018     9,124,000
Prior     29,128,000
Revolving Loans Amortized Cost Basis     9,202,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     554,000
Financing Receivable, before Allowance for Credit Loss, Total     109,677,000
Home equity line      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis     1,046,968,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     8,383,000
Financing Receivable, before Allowance for Credit Loss, Total     1,055,351,000
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     817,123,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     2,059,000
Financing Receivable, before Allowance for Credit Loss, Total     819,182,000
Home equity line | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis     171,117,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     2,714,000
Financing Receivable, before Allowance for Credit Loss, Total     173,831,000
Home equity line | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis     45,368,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     2,100,000
Financing Receivable, before Allowance for Credit Loss, Total     47,468,000
Home equity line | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis     7,485,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     1,029,000
Financing Receivable, before Allowance for Credit Loss, Total     8,514,000
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     1,151,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     481,000
Financing Receivable, before Allowance for Credit Loss, Total     1,632,000
Home equity line | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis     4,724,000
Financing Receivable, before Allowance for Credit Loss, Total     4,724,000
Total loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 403,488,000   2,560,433,000
2022/2021 2,529,150,000   2,880,346,000
2021/2020 2,871,513,000   1,319,250,000
2020/2019 1,277,530,000   1,311,719,000
2019/2018 1,237,120,000   825,528,000
Prior 3,374,951,000   2,699,183,000
Revolving Loans Amortized Cost Basis 2,502,369,000   2,467,297,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 25,151,000   28,256,000
Financing Receivable, before Allowance for Credit Loss, Total 14,221,272,000   14,092,012,000
Current period gross charge-offs:      
2022, Current period gross charge-offs 695,000    
2021, Current period gross charge-offs 681,000    
2020, Current period gross charge-offs 312,000    
2019, Current period gross charge-offs 634,000    
Prior, Current period gross charge-offs 1,700,000    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 1,587,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 221,000    
Total, Current period gross charge-offs 5,830,000    
Residential Portfolio Segment [Member]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Financing Receivable, before Allowance for Credit Loss, Total 4,318,742,000   4,302,788,000
Current period gross charge-offs:      
Prior, Current period gross charge-offs 122,000    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 116,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 19,000    
Total, Current period gross charge-offs 257,000    
Residential Portfolio Segment [Member] | Fico Other      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 85,733,000    
2022/2021 677,957,000    
2021/2020 1,218,665,000    
2020/2019 666,412,000    
2019/2018 300,815,000    
Prior 1,355,302,000    
Revolving Loans Amortized Cost Basis 1,100,972,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 8,251,000    
Financing Receivable, before Allowance for Credit Loss, Total 5,414,107,000    
Residential Portfolio Segment [Member] | Residential Lending: Residential Mortgage      
Current period gross charge-offs:      
Total, Current period gross charge-offs 122,000    
Residential Portfolio Segment [Member] | Home equity line      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 1,087,666,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 7,699,000    
Financing Receivable, before Allowance for Credit Loss, Total 1,095,365,000    
Current period gross charge-offs:      
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 116,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 19,000    
Total, Current period gross charge-offs 135,000    
Residential Portfolio Segment [Member] | 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 824,038,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,304,000    
Financing Receivable, before Allowance for Credit Loss, Total 825,342,000    
Residential Portfolio Segment [Member] | Home equity line | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 190,187,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 2,440,000    
Financing Receivable, before Allowance for Credit Loss, Total 192,627,000    
Residential Portfolio Segment [Member] | Home equity line | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 52,239,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,728,000    
Financing Receivable, before Allowance for Credit Loss, Total 53,967,000    
Residential Portfolio Segment [Member] | Home equity line | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 12,734,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 1,566,000    
Financing Receivable, before Allowance for Credit Loss, Total 14,300,000    
Residential Portfolio Segment [Member] | 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 5,370,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 661,000    
Financing Receivable, before Allowance for Credit Loss, Total 6,031,000    
Residential Portfolio Segment [Member] | Home equity line | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Revolving Loans Amortized Cost Basis 3,098,000    
Financing Receivable, before Allowance for Credit Loss, Total 3,098,000    
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 1,095,365,000   1,055,351,000
Consumer Portfolio Segment [Member]      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 72,539,000   335,116,000
2022/2021 319,613,000   218,940,000
2021/2020 198,570,000   112,885,000
2020/2019 99,988,000   105,789,000
2019/2018 89,614,000   57,786,000
Prior 64,410,000   28,131,000
Revolving Loans Amortized Cost Basis 343,808,000   361,126,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 3,010,000   3,161,000
Financing Receivable, before Allowance for Credit Loss, Total 1,191,552,000   1,222,934,000
Current period gross charge-offs:      
2022, Current period gross charge-offs 635,000    
2021, Current period gross charge-offs 681,000    
2020, Current period gross charge-offs 312,000    
2019, Current period gross charge-offs 614,000    
Prior, Current period gross charge-offs 867,000    
Revolving Loans Amortized Cost Basis, Current period gross charge-offs 1,471,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis, Current period gross charge-offs 202,000    
Total, Current period gross charge-offs 4,782,000 4,109,000  
Consumer Portfolio Segment [Member] | 740 and greater      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 40,337,000   200,887,000
2022/2021 158,451,000   111,047,000
2021/2020 96,174,000   53,534,000
2020/2019 46,618,000   43,912,000
2019/2018 37,211,000   24,951,000
Prior 24,636,000   8,432,000
Revolving Loans Amortized Cost Basis 114,058,000   125,126,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 161,000   185,000
Financing Receivable, before Allowance for Credit Loss, Total 517,646,000   568,074,000
Consumer Portfolio Segment [Member] | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 23,366,000   99,787,000
2022/2021 97,741,000   67,140,000
2021/2020 56,306,000   37,260,000
2020/2019 29,741,000   31,751,000
2019/2018 24,169,000   15,874,000
Prior 15,970,000   7,665,000
Revolving Loans Amortized Cost Basis 70,708,000   72,101,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 441,000   514,000
Financing Receivable, before Allowance for Credit Loss, Total 318,442,000   332,092,000
Consumer Portfolio Segment [Member] | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 7,022,000   25,949,000
2022/2021 44,839,000   29,587,000
2021/2020 26,924,000   14,226,000
2020/2019 12,728,000   16,872,000
2019/2018 14,484,000   9,672,000
Prior 11,731,000   6,488,000
Revolving Loans Amortized Cost Basis 33,772,000   31,854,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 860,000   937,000
Financing Receivable, before Allowance for Credit Loss, Total 152,360,000   135,585,000
Consumer Portfolio Segment [Member] | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 750,000   3,017,000
2022/2021 10,172,000   5,475,000
2021/2020 9,698,000   5,226,000
2020/2019 6,475,000   8,056,000
2019/2018 7,647,000   5,396,000
Prior 7,519,000   3,924,000
Revolving Loans Amortized Cost Basis 11,937,000   11,269,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 855,000   854,000
Financing Receivable, before Allowance for Credit Loss, Total 55,053,000   43,217,000
Consumer Portfolio Segment [Member] | Less than 550      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 122,000   656,000
2022/2021 4,446,000   1,351,000
2021/2020 5,400,000   2,286,000
2020/2019 4,078,000   3,779,000
2019/2018 4,951,000   1,869,000
Prior 4,518,000   1,593,000
Revolving Loans Amortized Cost Basis 4,329,000   3,541,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 526,000   443,000
Financing Receivable, before Allowance for Credit Loss, Total 28,370,000   15,518,000
Consumer Portfolio Segment [Member] | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 866,000   3,205,000
2022/2021 2,376,000   258,000
2021/2020 8,000    
2020/2019     51,000
2019/2018 16,000   24,000
Prior 36,000   29,000
Revolving Loans Amortized Cost Basis 36,396,000   38,805,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 167,000   227,000
Financing Receivable, before Allowance for Credit Loss, Total 39,865,000   42,599,000
Consumer Portfolio Segment [Member] | Fico Other      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 76,000   1,615,000
2022/2021 1,588,000   4,082,000
2021/2020 4,060,000   353,000
2020/2019 348,000   1,368,000
2019/2018 1,136,000    
Revolving Loans Amortized Cost Basis 72,608,000   78,430,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     1,000
Financing Receivable, before Allowance for Credit Loss, Total 79,816,000   85,849,000
Residential Mortgage loans      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     687,599,000
2022/2021     1,227,369,000
2021/2020     677,025,000
2020/2019     309,308,000
2019/2018     217,050,000
Prior     1,174,681,000
Revolving Loans Amortized Cost Basis     1,056,170,000
Revolving Loans Converted to Term Loans Amortized Cost Basis     8,937,000
Financing Receivable, before Allowance for Credit Loss, Total     5,358,139,000
Residential Mortgage loans | Residential Lending: Residential Mortgage      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 85,733,000    
2022/2021 677,957,000    
2021/2020 1,218,665,000    
2020/2019 666,412,000    
2019/2018 300,815,000    
Prior 1,355,302,000    
Revolving Loans Amortized Cost Basis 13,306,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 552,000    
Financing Receivable, before Allowance for Credit Loss, Total 4,318,742,000    
Current period gross charge-offs:      
Prior, Current period gross charge-offs 122,000    
Total, Current period gross charge-offs 122,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | 740 and greater      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 61,686,000    
2022/2021 550,291,000    
2021/2020 1,044,555,000    
2020/2019 546,035,000    
2019/2018 235,535,000    
Prior 1,057,166,000    
Financing Receivable, before Allowance for Credit Loss, Total 3,495,268,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | 680 - 739      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 11,937,000    
2022/2021 75,088,000    
2021/2020 118,790,000    
2020/2019 86,202,000    
2019/2018 35,379,000    
Prior 145,363,000    
Financing Receivable, before Allowance for Credit Loss, Total 472,759,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | 620 - 679      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 2,776,000    
2022/2021 11,464,000    
2021/2020 17,424,000    
2020/2019 9,946,000    
2019/2018 9,243,000    
Prior 36,678,000    
Financing Receivable, before Allowance for Credit Loss, Total 87,531,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | 550 - 619      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2022/2021 2,613,000    
2021/2020 2,865,000    
2020/2019 2,447,000    
2019/2018 825,000    
Prior 12,487,000    
Financing Receivable, before Allowance for Credit Loss, Total 21,237,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | Less than 550      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2022/2021 530,000    
2021/2020 2,445,000    
2020/2019 1,498,000    
2019/2018 275,000    
Prior 7,276,000    
Financing Receivable, before Allowance for Credit Loss, Total 12,024,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | No Score      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 4,909,000    
2022/2021 19,766,000    
2021/2020 14,573,000    
2020/2019 6,773,000    
2019/2018 10,494,000    
Prior 61,168,000    
Financing Receivable, before Allowance for Credit Loss, Total 117,683,000    
Residential Mortgage loans | Residential Lending: Residential Mortgage | Fico Other      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 4,425,000    
2022/2021 18,205,000    
2021/2020 18,013,000    
2020/2019 13,511,000    
2019/2018 9,064,000    
Prior 35,164,000    
Revolving Loans Amortized Cost Basis 13,306,000    
Revolving Loans Converted to Term Loans Amortized Cost Basis 552,000    
Financing Receivable, before Allowance for Credit Loss, Total 112,240,000    
Commercial and Industrial      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 71,962,000   380,244,000
2022/2021 370,145,000   430,817,000
2021/2020 419,900,000   61,473,000
2020/2019 54,392,000   177,922,000
2019/2018 174,494,000   54,209,000
Prior 184,248,000   140,740,000
Revolving Loans Amortized Cost Basis 979,301,000   974,334,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 13,890,000   16,158,000
Financing Receivable, before Allowance for Credit Loss, Total 2,268,332,000   2,235,897,000
Current period gross charge-offs:      
2022, Current period gross charge-offs 60,000    
2019, Current period gross charge-offs 20,000    
Prior, Current period gross charge-offs 711,000    
Total, Current period gross charge-offs 791,000 $ 706,000  
Commercial and Industrial | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 66,587,000   359,881,000
2022/2021 338,534,000   422,567,000
2021/2020 412,459,000   54,656,000
2020/2019 48,560,000   170,222,000
2019/2018 167,698,000   51,476,000
Prior 178,991,000   137,257,000
Revolving Loans Amortized Cost Basis 921,651,000   894,384,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 13,566,000   15,715,000
Financing Receivable, before Allowance for Credit Loss, Total 2,148,046,000   2,106,158,000
Commercial and Industrial | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 152,000   2,059,000
2022/2021 16,591,000   240,000
2021/2020 202,000   1,371,000
2020/2019 994,000   2,643,000
2019/2018 2,526,000   184,000
Prior 1,548,000   1,431,000
Revolving Loans Amortized Cost Basis 2,557,000   22,897,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 283,000   378,000
Financing Receivable, before Allowance for Credit Loss, Total 24,853,000   31,203,000
Commercial and Industrial | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     625,000
2022/2021 594,000   289,000
2021/2020 274,000   1,117,000
2020/2019 1,058,000   1,092,000
2019/2018 958,000   668,000
Prior 1,422,000   885,000
Revolving Loans Amortized Cost Basis 11,043,000   14,733,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 41,000   65,000
Financing Receivable, before Allowance for Credit Loss, Total 15,390,000   19,474,000
Commercial and Industrial | Other Indicator      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 5,223,000   17,679,000
2022/2021 14,426,000   7,721,000
2021/2020 6,965,000   4,329,000
2020/2019 3,780,000   3,965,000
2019/2018 3,312,000   1,881,000
Prior 2,287,000   1,167,000
Revolving Loans Amortized Cost Basis 44,050,000   42,320,000
Financing Receivable, before Allowance for Credit Loss, Total 80,043,000   79,062,000
Commercial real estate      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 105,554,000   889,753,000
2022/2021 880,455,000   695,882,000
2021/2020 661,523,000   320,566,000
2020/2019 321,885,000   580,465,000
2019/2018 528,627,000   397,690,000
Prior 1,551,158,000   1,199,197,000
Revolving Loans Amortized Cost Basis 56,998,000   48,756,000
Financing Receivable, before Allowance for Credit Loss, Total 4,106,200,000   4,132,309,000
Commercial real estate | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 105,554,000   889,583,000
2022/2021 880,292,000   695,882,000
2021/2020 661,523,000   319,838,000
2020/2019 321,162,000   565,587,000
2019/2018 521,596,000   395,474,000
Prior 1,533,711,000   1,173,163,000
Revolving Loans Amortized Cost Basis 56,034,000   48,081,000
Financing Receivable, before Allowance for Credit Loss, Total 4,079,872,000   4,087,608,000
Commercial real estate | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022     170,000
2022/2021 163,000    
2021/2020     555,000
2020/2019 551,000   14,878,000
2019/2018 7,031,000   512,000
Prior 11,490,000   11,398,000
Revolving Loans Amortized Cost Basis 659,000   675,000
Financing Receivable, before Allowance for Credit Loss, Total 19,894,000   28,188,000
Commercial real estate | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2021/2020     173,000
2020/2019 172,000    
2019/2018     1,704,000
Prior 5,808,000   14,485,000
Revolving Loans Amortized Cost Basis 305,000    
Financing Receivable, before Allowance for Credit Loss, Total 6,285,000   16,362,000
Commercial real estate | Other Indicator      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
Prior 149,000   151,000
Financing Receivable, before Allowance for Credit Loss, Total 149,000   151,000
Construction      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 16,036,000   154,158,000
2022/2021 181,878,000   282,875,000
2021/2020 349,814,000   101,109,000
2020/2019 92,506,000   99,422,000
2019/2018 106,228,000   92,778,000
Prior 146,207,000   87,390,000
Revolving Loans Amortized Cost Basis 21,290,000   26,911,000
Financing Receivable, before Allowance for Credit Loss, Total 913,959,000   844,643,000
Construction | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 15,219,000   124,464,000
2022/2021 152,263,000   261,536,000
2021/2020 333,608,000   96,423,000
2020/2019 89,515,000   97,000,000
2019/2018 103,855,000   88,973,000
Prior 141,243,000   84,704,000
Revolving Loans Amortized Cost Basis 20,349,000   25,957,000
Financing Receivable, before Allowance for Credit Loss, Total 856,052,000   779,057,000
Construction | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2020/2019     221,000
2019/2018 213,000    
Financing Receivable, before Allowance for Credit Loss, Total 213,000   221,000
Construction | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2019/2018     21,000
Prior 486,000   490,000
Financing Receivable, before Allowance for Credit Loss, Total 486,000   511,000
Construction | Other Indicator      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 817,000   29,694,000
2022/2021 29,615,000   21,339,000
2021/2020 16,206,000   4,686,000
2020/2019 2,991,000   2,201,000
2019/2018 2,160,000   3,784,000
Prior 4,478,000   2,196,000
Revolving Loans Amortized Cost Basis 941,000   954,000
Financing Receivable, before Allowance for Credit Loss, Total 57,208,000   64,854,000
Lease financing      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 51,664,000   113,563,000
2022/2021 99,102,000   24,463,000
2021/2020 23,041,000   46,192,000
2020/2019 42,347,000   38,813,000
2019/2018 37,342,000   6,015,000
Prior 73,626,000   69,044,000
Financing Receivable, before Allowance for Credit Loss, Total 327,122,000   298,090,000
Lease financing | Pass      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 51,664,000   113,563,000
2022/2021 99,102,000   24,052,000
2021/2020 22,653,000   43,497,000
2020/2019 42,081,000   37,502,000
2019/2018 37,333,000   6,004,000
Prior 72,254,000   67,687,000
Financing Receivable, before Allowance for Credit Loss, Total 325,087,000   292,305,000
Lease financing | Special mention      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2022/2021     411,000
2021/2020 388,000   2,498,000
2020/2019 82,000   1,299,000
Financing Receivable, before Allowance for Credit Loss, Total 470,000   4,208,000
Lease financing | Substandard      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2021/2020     197,000
2020/2019 184,000   12,000
2019/2018 9,000   11,000
Prior 1,372,000   1,357,000
Financing Receivable, before Allowance for Credit Loss, Total 1,565,000   1,577,000
Commercial Lending      
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]      
2023/2022 245,216,000   1,537,718,000
2022/2021 1,531,580,000   1,434,037,000
2021/2020 1,454,278,000   529,340,000
2020/2019 511,130,000   896,622,000
2019/2018 846,691,000   550,692,000
Prior 1,955,239,000   1,496,371,000
Revolving Loans Amortized Cost Basis 1,057,589,000   1,050,001,000
Revolving Loans Converted to Term Loans Amortized Cost Basis 13,890,000   16,158,000
Financing Receivable, before Allowance for Credit Loss, Total 7,615,613,000   $ 7,510,939,000
Current period gross charge-offs:      
2022, Current period gross charge-offs 60,000    
2019, Current period gross charge-offs 20,000    
Prior, Current period gross charge-offs 711,000    
Total, Current period gross charge-offs $ 791,000