Loans and Allowance for Credit Losses - Amortized cost basis of loans (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]
2023	$ 596,068
2022	667,908
2021	452,797
2020	341,964
2019	191,673
Prior	273,542
Loans amortized cost basis	235,631
Loans	2,759,583	$ 2,443,994
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2023	43
Current period gross charge-off, 2022	2
Current period gross charge-off, 2021	58
Current period gross charge-off, 2020	42
Current period gross charge-off, 2019	253
Current period gross charge-off, Prior	215
Current period gross charge-off, Total	613	1,549	$ 1,922
Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		2,408,709
Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		22,032
Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		13,253
Commercial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans	1,849,267	1,563,356
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, Total	436	1,396	1,766
Commercial | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		1,529,512
Commercial | Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		21,969
Commercial | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		11,875
Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans	910,316	880,638
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, Total	177	153	156
Consumer | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		879,197
Consumer | Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		63
Consumer | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		1,378
Commercial and industrial | Commercial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	197,997
2022	93,934
2021	67,927
2020	70,600
2019	34,697
Prior	17,566
Loans amortized cost basis	115,600
Loans	598,321	583,876
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2023	39
Current period gross charge-off, 2021	49
Current period gross charge-off, 2020	11
Current period gross charge-off, 2019	247
Current period gross charge-off, Prior	90
Current period gross charge-off, Total	436	1,396	1,230
Commercial and industrial | Commercial | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	197,533
2022	89,090
2021	67,691
2020	64,272
2019	34,603
Prior	15,053
Loans amortized cost basis	100,239
Loans	568,481	558,694
Commercial and industrial | Commercial | Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		21,969
Commercial and industrial | Commercial | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	464
2022	4,844
2021	236
2020	6,328
2019	94
Prior	2,513
Loans amortized cost basis	15,361
Loans	29,840	3,213
Real estate construction | Commercial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	29,902
2022	78,611
2021	14,326
2020	122
Prior	952
Loans amortized cost basis	121
Loans	124,034	97,810
Real estate construction | Commercial | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	29,902
2022	57,944
2021	14,326
2020	122
Prior	952
Loans amortized cost basis	121
Loans	103,367	97,548
Real estate construction | Commercial | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022	20,667
Loans	20,667	262
Residential | Real estate first mortgage | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	72,180
2022	207,177
2021	218,719
2020	108,100
2019	33,102
Prior	87,317
Loans amortized cost basis	284
Loans	726,879	679,551
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2021	9
Current period gross charge-off, Prior	40
Current period gross charge-off, Total	49
Residential | Real estate first mortgage | Consumer | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		678,743
Residential | Real estate first mortgage | Consumer | Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		63
Residential | Real estate first mortgage | Consumer | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		745
Residential | Real estate first mortgage | Consumer | Performing
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	72,180
2022	207,177
2021	218,719
2020	108,100
2019	33,102
Prior	87,212
Loans amortized cost basis	284
Loans	726,774
Residential | Real estate first mortgage | Consumer | Nonperforming
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Prior	105
Loans	105
Residential | Real estate junior lien | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	18,408
2022	15,655
2021	5,946
2020	4,857
2019	1,769
Prior	5,280
Loans amortized cost basis	102,219
Loans	154,134	150,479
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, Prior	77
Current period gross charge-off, Total	77
Residential | Real estate junior lien | Consumer | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		149,847
Residential | Real estate junior lien | Consumer | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		632
Residential | Real estate junior lien | Consumer | Performing
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	18,408
2022	15,655
2021	5,946
2020	4,857
2019	1,769
Prior	5,280
Loans amortized cost basis	100,438
Loans	152,353
Residential | Real estate junior lien | Consumer | Nonperforming
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans amortized cost basis	1,781
Loans	1,781
Commercial real estate | Commercial
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	272,261
2022	266,136
2021	144,899
2020	153,796
2019	120,551
Prior	161,475
Loans amortized cost basis	7,794
Loans	1,126,912	881,670
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, Total			536
Commercial real estate | Commercial | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	272,261
2022	265,549
2021	142,027
2020	153,796
2019	116,861
Prior	159,454
Loans amortized cost basis	7,794
Loans	1,117,742	873,270
Commercial real estate | Commercial | Special Mention
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Prior	262
Loans	262
Commercial real estate | Commercial | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022	587
2021	2,872
2019	3,690
Prior	1,759
Loans	8,908	8,400
Other revolving and installment | Consumer
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	5,320
2022	6,395
2021	980
2020	4,489
2019	1,554
Prior	952
Loans amortized cost basis	9,613
Loans	29,303	50,608
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Write-off, by Origination Year [Abstract]
Current period gross charge-off, 2023	4
Current period gross charge-off, 2022	2
Current period gross charge-off, 2020	31
Current period gross charge-off, 2019	6
Current period gross charge-off, Prior	8
Current period gross charge-off, Total	51	153	$ 156
Other revolving and installment | Consumer | Pass
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		50,607
Other revolving and installment | Consumer | Substandard
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loans		$ 1
Other revolving and installment | Consumer | Performing
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023	5,320
2022	6,395
2021	980
2020	4,489
2019	1,554
Prior	952
Loans amortized cost basis	9,613
Loans	$ 29,303