Loans - Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans	$ 787,050	$ 771,169
Current
Financing Receivable, Past Due [Line Items]
Loans	780,486	764,499
30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	1,678	3,471
60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	138	278
90 Days and over and accruing
Financing Receivable, Past Due [Line Items]
Loans	98	511
Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	4,650	2,410
Residential real estate
Financing Receivable, Past Due [Line Items]
Loans	246,827	183,166
Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	245,169	179,794
Residential real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	1,328	2,166
Residential real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	130	211
Residential real estate | 90 Days and over and accruing
Financing Receivable, Past Due [Line Items]
Loans	53	368
Residential real estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	147	627
Construction real estate
Financing Receivable, Past Due [Line Items]
Loans	65,149	57,417
Construction real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	64,939	57,116
Construction real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	72	70
Construction real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	0	67
Construction real estate | 90 Days and over and accruing
Financing Receivable, Past Due [Line Items]
Loans	0	143
Construction real estate | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	138	21
Commercial real estate
Financing Receivable, Past Due [Line Items]
Loans	344,816	320,627
Commercial real estate | Current
Financing Receivable, Past Due [Line Items]
Loans	340,209	317,748
Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	242	1,130
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	4,365	1,749
Commercial loans
Financing Receivable, Past Due [Line Items]
Loans	49,788	108,861
Commercial loans | Current
Financing Receivable, Past Due [Line Items]
Loans	49,699	108,749
Commercial loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	36	99
Commercial loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Loans	8	0
Commercial loans | 90 Days and over and accruing
Financing Receivable, Past Due [Line Items]
Loans	45	0
Commercial loans | Nonaccrual
Financing Receivable, Past Due [Line Items]
Loans	0	13
Consumer
Financing Receivable, Past Due [Line Items]
Loans	2,376	2,601
Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	2,376	2,595
Consumer | 30-59 Days
Financing Receivable, Past Due [Line Items]
Loans	0	6
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	78,094	98,497
Municipal | Current
Financing Receivable, Past Due [Line Items]
Loans	78,094	98,497
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