v3.26.1
Loans - Residential, Home Equity and Consumer Loans Based on Payment Activity (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]          
Total $ 5,941,410   $ 5,941,410   $ 5,884,448
Current Period Gross Charge-Offs          
Total 945 $ 1,021 2,413 $ 1,646  
Consumer Loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 20,966   20,966   58,703
Year two 45,697   45,697   28,567
Year three 13,007   13,007   13,023
Year four 7,290   7,290   5,100
Year five 3,393   3,393   3,489
Prior 4,067   4,067   2,434
Revolving Loans Amortized Cost Basis 6,766   6,766   6,332
Total 101,186   101,186   117,648
Current Period Gross Charge-Offs          
Year one     881   1,502
Year two     51   51
Year three     28   66
Year four     23   30
Year five     1   15
Prior     7   3
Revolving Loans Amortized Cost Basis     0   0
Total 596 334 991 659 1,667
Consumer Loans | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 20,966   20,966   58,703
Year two 45,679   45,679   28,540
Year three 12,741   12,741   13,023
Year four 7,271   7,271   5,094
Year five 3,384   3,384   3,489
Prior 3,903   3,903   2,434
Revolving Loans Amortized Cost Basis 6,766   6,766   6,332
Total 100,710   100,710   117,615
Consumer Loans | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 0   0   0
Year two 18   18   27
Year three 266   266   0
Year four 19   19   6
Year five 9   9   0
Prior 164   164   0
Revolving Loans Amortized Cost Basis 0   0   0
Total 476   476   33
Home Equity Loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 57   57   315
Year two 502   502   1,706
Year three 1,941   1,941   1,693
Year four 2,210   2,210   4,151
Year five 4,069   4,069   1,379
Prior 6,231   6,231   4,758
Revolving Loans Amortized Cost Basis 507,386   507,386   470,298
Total 522,396   522,396   484,300
Current Period Gross Charge-Offs          
Year one     0   0
Year two     0   0
Year three     0   0
Year four     0   68
Year five     87   25
Prior     25   3
Revolving Loans Amortized Cost Basis     0   0
Total 112 0 112 0 96
Home Equity Loans | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 57   57   315
Year two 502   502   1,706
Year three 1,659   1,659   1,495
Year four 2,132   2,132   3,900
Year five 3,998   3,998   1,294
Prior 6,044   6,044   4,672
Revolving Loans Amortized Cost Basis 507,324   507,324   470,142
Total 521,716   521,716   483,524
Home Equity Loans | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 0   0   0
Year two 0   0   0
Year three 282   282   198
Year four 78   78   251
Year five 71   71   85
Prior 187   187   86
Revolving Loans Amortized Cost Basis 62   62   156
Total 680   680   776
Residential Mortgage Loans          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 39,584   39,584   78,420
Year two 75,597   75,597   84,022
Year three 80,584   80,584   99,206
Year four 85,237   85,237   188,642
Year five 178,799   178,799   142,534
Prior 300,901   300,901   181,729
Revolving Loans Amortized Cost Basis 0   0   0
Total 760,702   760,702   774,553
Current Period Gross Charge-Offs          
Year one     0   0
Year two     0   0
Year three     32   77
Year four     51   0
Year five     0   37
Prior     59   0
Revolving Loans Amortized Cost Basis     0   0
Total 32 $ 28 142 $ 28 114
Residential Mortgage Loans | Performing          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 39,584   39,584   78,420
Year two 75,597   75,597   83,687
Year three 80,467   80,467   99,058
Year four 84,812   84,812   188,414
Year five 178,647   178,647   142,032
Prior 298,894   298,894   180,555
Revolving Loans Amortized Cost Basis 0   0   0
Total 758,001   758,001   772,166
Residential Mortgage Loans | Nonperforming          
Financing Receivable, Credit Quality Indicator [Line Items]          
Year one 0   0   0
Year two 0   0   335
Year three 117   117   148
Year four 425   425   228
Year five 152   152   502
Prior 2,007   2,007   1,174
Revolving Loans Amortized Cost Basis 0   0   0
Total $ 2,701   $ 2,701   $ 2,387