Loans - Nonperforming Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 3,634,792	$ 3,371,789
1-4 Family Construction
Financing Receivable, Credit Quality Indicator [Line Items]
2020	27,539	16,081
2019	9,137	11,547
2018	857	140
2017	66	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	223	0
Revolving Loans Converted to Term	0	0
Loans	37,822	27,768
Home equity lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
2020	14,383	19,764
2019	14,621	12,823
2018	9,573	12,842
2017	10,594	9,095
2016	7,240	8,215
Prior	39,955	42,864
Revolving Loans Amortized Cost Basis	8,151	3,841
Revolving Loans Converted to Term	0	0
Loans	104,517	109,444
Residential Mortgages secured by first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2020	232,685	211,910
2019	178,639	136,265
2018	111,560	94,475
2017	63,001	99,663
2016	74,394	62,373
Prior	162,781	166,817
Revolving Loans Amortized Cost Basis	3,669	5,527
Revolving Loans Converted to Term	0	0
Loans	826,729	777,030
Residential Mortgages secured by junior liens
Financing Receivable, Credit Quality Indicator [Line Items]
2020	20,617	14,552
2019	11,256	12,255
2018	7,239	7,031
2017	4,407	5,660
2016	3,592	3,366
Prior	9,158	10,484
Revolving Loans Amortized Cost Basis	420	378
Revolving Loans Converted to Term	0	0
Loans	56,689	53,726
Other revolving credit plans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	5,313	4,088
2019	3,596	4,516
2018	3,094	3,324
2017	2,596	3,149
2016	2,977	1,301
Prior	8,960	9,129
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	26,536	25,507
Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2020	7,058	8,965
2019	5,461	8,599
2018	4,680	4,652
2017	2,457	1,641
2016	682	764
Prior	524	723
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	20,862	25,344
Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2020	30,627	24,939
2019	11,187	11,447
2018	4,633	3,654
2017	1,476	809
2016	319	218
Prior	1,434	1,724
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	49,676	42,792
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,117,706	1,055,812
Performing | 1-4 Family Construction
Financing Receivable, Credit Quality Indicator [Line Items]
2020	27,539	16,081
2019	9,137	11,547
2018	857	140
2017	66	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	223	0
Revolving Loans Converted to Term	0	0
Loans	37,822	27,768
Performing | Home equity lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
2020	14,383	19,764
2019	14,621	12,823
2018	9,564	12,842
2017	10,584	8,793
2016	6,863	8,182
Prior	39,527	42,514
Revolving Loans Amortized Cost Basis	8,151	3,841
Revolving Loans Converted to Term	0	0
Loans	103,693	108,759
Performing | Residential Mortgages secured by first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2020	232,606	211,910
2019	178,380	136,181
2018	111,333	93,588
2017	62,850	99,520
2016	74,136	62,312
Prior	160,402	163,556
Revolving Loans Amortized Cost Basis	3,475	5,505
Revolving Loans Converted to Term	0	0
Loans	823,182	772,572
Performing | Residential Mortgages secured by junior liens
Financing Receivable, Credit Quality Indicator [Line Items]
2020	20,617	14,552
2019	11,256	12,255
2018	7,239	7,031
2017	4,407	5,660
2016	3,508	3,347
Prior	9,095	10,389
Revolving Loans Amortized Cost Basis	420	378
Revolving Loans Converted to Term	0	0
Loans	56,542	53,612
Performing | Other revolving credit plans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	5,313	4,088
2019	3,596	4,516
2018	3,090	3,320
2017	2,592	3,149
2016	2,977	1,301
Prior	8,955	9,127
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	26,523	25,501
Performing | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2020	7,047	8,965
2019	5,448	8,595
2018	4,668	4,652
2017	2,457	1,635
2016	682	764
Prior	524	701
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	20,826	25,312
Performing | Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2020	30,423	24,857
2019	11,017	11,183
2018	4,537	3,579
2017	1,451	796
2016	316	218
Prior	1,374	1,654
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	49,118	42,288
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,125	5,799
Nonperforming | 1-4 Family Construction
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	0	0
Nonperforming | Home equity lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0	0
2019	0	0
2018	9	0
2017	10	302
2016	377	33
Prior	428	350
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	824	685
Nonperforming | Residential Mortgages secured by first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2020	79	0
2019	259	84
2018	227	887
2017	151	143
2016	258	61
Prior	2,379	3,261
Revolving Loans Amortized Cost Basis	194	22
Revolving Loans Converted to Term	0	0
Loans	3,547	4,458
Nonperforming | Residential Mortgages secured by junior liens
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	84	19
Prior	63	95
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	147	114
Nonperforming | Other revolving credit plans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0	0
2019	0	0
2018	4	4
2017	4	0
2016	0	0
Prior	5	2
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	13	6
Nonperforming | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2020	11	0
2019	13	4
2018	12	0
2017	0	6
2016	0	0
Prior	0	22
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	36	32
Nonperforming | Other consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2020	204	82
2019	170	264
2018	96	75
2017	25	13
2016	3	0
Prior	60	70
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Loans	$ 558	$ 504