Loans - Residential, Home Equity and Consumer Loans Based on Payment Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 4,133,267	$ 3,977,900
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Total	2,901	3,791	$ 2,850
Consumer Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	40,530	49,282
Year two	20,829	21,480
Year three	9,372	9,720
Year four	5,484	2,756
Year five	1,181	917
Prior	1,550	1,912
Revolving Loans Amortized Cost Basis	2,450	1,786
Loans	81,396	87,853
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Year one	1,212	1,162
Year two	181	42
Year three	72	23
Year four	40	71
Year five	0	3
Prior	2	1
Revolving Loans Amortized Cost Basis	4	7
Total	1,511	1,309	1,364
Consumer Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	40,504	49,208
Year two	20,828	21,459
Year three	9,359	9,708
Year four	5,469	2,756
Year five	1,181	917
Prior	1,542	1,911
Revolving Loans Amortized Cost Basis	2,450	1,783
Loans	81,333	87,742
Consumer Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	26	74
Year two	1	21
Year three	13	12
Year four	15	0
Year five	0	0
Prior	8	1
Revolving Loans Amortized Cost Basis	0	3
Loans	63	111
Home Equity Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	172	0
Year two	289	417
Year three	3,998	488
Year four	797	150
Year five	503	165
Prior	4,136	1,309
Revolving Loans Amortized Cost Basis	334,913	297,156
Loans	344,808	299,685
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Year one	0	0
Year two	0	0
Year three	62	0
Year four	99	55
Year five	0	0
Prior	0	24
Revolving Loans Amortized Cost Basis	9	15
Total	170	94	69
Home Equity Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	172	0
Year two	161	170
Year three	3,721	236
Year four	773	90
Year five	478	165
Prior	3,532	1,207
Revolving Loans Amortized Cost Basis	334,884	296,784
Loans	343,721	298,652
Home Equity Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	0
Year two	128	247
Year three	277	252
Year four	24	60
Year five	25	0
Prior	604	102
Revolving Loans Amortized Cost Basis	29	372
Loans	1,087	1,033
Residential Mortgage Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	48,957	56,317
Year two	51,273	65,361
Year three	58,217	86,170
Year four	73,908	41,639
Year five	35,604	17,940
Prior	89,489	95,417
Revolving Loans Amortized Cost Basis	0	0
Loans	357,448	362,844
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Year one	0	0
Year two	0	0
Year three	0	22
Year four	0	36
Year five	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	58	$ 24
Residential Mortgage Loans | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	48,957	56,306
Year two	51,059	65,301
Year three	57,988	85,753
Year four	73,239	41,352
Year five	35,370	17,831
Prior	88,633	94,926
Revolving Loans Amortized Cost Basis	0	0
Loans	355,246	361,469
Residential Mortgage Loans | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Year one	0	11
Year two	214	60
Year three	229	417
Year four	669	287
Year five	234	109
Prior	856	491
Revolving Loans Amortized Cost Basis	0	0
Loans	$ 2,202	$ 1,375