Allowance for Loan Losses and Credit Quality - Loan Ratings by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	$ 938,048	$ 787,050
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	739,627	584,593
Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	187,002	194,587
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	11,419	7,870
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	326,769	246,827
Residential Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	302,894	227,684
Residential Real Estate | Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	21,660	16,820
Residential Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	2,215	2,323
Construction Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	98,989	65,149
Construction Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	47,839	39,135
Construction Real Estate | Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	51,086	25,816
Construction Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	64	198
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	377,458	344,816
Commercial Real Estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	258,646	191,902
Commercial Real Estate | Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	109,948	147,645
Commercial Real Estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	8,864	5,269
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	42,228	49,788
Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	37,648	45,407
Commercial | Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	4,304	4,301
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	276	80
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	2,129	2,376
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	2,125	2,371
Consumer | Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	4	5
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Municipal
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	90,475	78,094
Municipal | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	90,475	78,094
Municipal | Satisfactory/Monitor
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Municipal | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	$ 0	$ 0