Loans - Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 827,607	$ 787,050
Current
Financing Receivable, Past Due [Line Items]
Loans	821,353	780,486
30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	1,530	1,678
60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	90	138
90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	229	98
Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	4,405	4,650
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	282,662	246,827
Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	281,011	245,169
Residential real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	1,361	1,328
Residential real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	88	130
Residential real estate | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	80	53
Residential real estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	122	147
Construction real estate
Financing Receivable, Past Due [Line Items]
Loans	68,730	65,149
Construction real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	68,550	64,939
Construction real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	45	72
Construction real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction real estate | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	0	0
Construction real estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	135	138
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	348,378	344,816
Commercial real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	344,137	340,209
Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	93	242
Commercial real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	4,148	4,365
Commercial
Financing Receivable, Past Due [Line Items]
Loans	44,808	49,788
Commercial | Current
Financing Receivable, Past Due [Line Items]
Loans	44,644	49,699
Commercial | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	13	36
Commercial | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	2	8
Commercial | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	149	45
Commercial | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Loans	2,241	2,376
Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	2,223	2,376
Consumer | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	18	0
Consumer | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal
Financing Receivable, Past Due [Line Items]
Loans	80,788	78,094
Municipal | Current
Financing Receivable, Past Due [Line Items]
Loans	80,788	78,094
Municipal | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal | 90 Days and Over and Accruing
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	$ 0	$ 0