Loans - Current, Past due and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Gross loans	$ 938,048	$ 787,050
Current
Financing Receivable, Past Due [Line Items]
Gross loans	932,988	780,486
30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	2,216	1,678
60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	1,155	138
90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	308	98
Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	1,381	4,650
Residential Real Estate
Financing Receivable, Past Due [Line Items]
Gross loans	326,769	246,827
Residential Real Estate | Current
Financing Receivable, Past Due [Line Items]
Gross loans	325,444	245,169
Residential Real Estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	25	1,328
Residential Real Estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	887	130
Residential Real Estate | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	308	53
Residential Real Estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	105	147
Construction Real Estate
Financing Receivable, Past Due [Line Items]
Gross loans	98,989	65,149
Construction Real Estate | Current
Financing Receivable, Past Due [Line Items]
Gross loans	98,936	64,939
Construction Real Estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	0	72
Construction Real Estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	43	0
Construction Real Estate | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Construction Real Estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	10	138
Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Gross loans	377,458	344,816
Commercial Real Estate | Current
Financing Receivable, Past Due [Line Items]
Gross loans	374,242	340,209
Commercial Real Estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	1,950	242
Commercial Real Estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Commercial Real Estate | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Commercial Real Estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	1,266	4,365
Commercial
Financing Receivable, Past Due [Line Items]
Gross loans	42,228	49,788
Commercial | Current
Financing Receivable, Past Due [Line Items]
Gross loans	41,762	49,699
Commercial | 30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	241	36
Commercial | 60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	225	8
Commercial | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	0	45
Commercial | Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Gross loans	2,129	2,376
Consumer | Current
Financing Receivable, Past Due [Line Items]
Gross loans	2,129	2,376
Consumer | 30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Consumer | 60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Consumer | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Consumer | Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Municipal
Financing Receivable, Past Due [Line Items]
Gross loans	90,475	78,094
Municipal | Current
Financing Receivable, Past Due [Line Items]
Gross loans	90,475	78,094
Municipal | 30-59 Days
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Municipal | 60-89 Days
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Municipal | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Gross loans	0	0
Municipal | Nonaccrual
Financing Receivable, Past Due [Line Items]
Gross loans	$ 0	$ 0