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Loans - Past-due Status of Loans by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Schedule of Financing Receivables [Line Items]
Loans	$ 1,857,975	$ 1,647,649	$ 1,617,212
90+ Days & Accruing	0	32	229
30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	867	1,548	1,028
60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	154	543	1,519
90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	440	2,254	1,571
All Past Due
Schedule of Financing Receivables [Line Items]
Loans	1,461	4,345	4,118
Current
Schedule of Financing Receivables [Line Items]
Loans	1,856,514	1,643,304	1,613,094
Commercial |    Real estate
Schedule of Financing Receivables [Line Items]
Loans	638,708	576,198	550,077
90+ Days & Accruing	0	0	36
Commercial |    Real estate | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	249	33
Commercial |    Real estate | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	4	0	0
Commercial |    Real estate | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	191	191	226
Commercial |    Real estate | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	195	440	259
Commercial |    Real estate | Current
Schedule of Financing Receivables [Line Items]
Loans	638,513	575,758	549,818
Commercial |    Construction
Schedule of Financing Receivables [Line Items]
Loans	129,036	79,365	73,302
90+ Days & Accruing	0	0	0
Commercial |    Construction | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	12	13
Commercial |    Construction | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	15
Commercial |    Construction | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	12	0
Commercial |    Construction | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	24	28
Commercial |    Construction | Current
Schedule of Financing Receivables [Line Items]
Loans	129,036	79,341	73,274
Commercial |    Other
Schedule of Financing Receivables [Line Items]
Loans	310,110	264,570	288,121
90+ Days & Accruing	0	0	0
Commercial |    Other | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	172	30	92
Commercial |    Other | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	16	23	359
Commercial |    Other | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	83	104	225
Commercial |    Other | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	271	157	676
Commercial |    Other | Current
Schedule of Financing Receivables [Line Items]
Loans	309,839	264,413	287,445
Municipal
Schedule of Financing Receivables [Line Items]
Loans	48,702	48,362	40,616
90+ Days & Accruing	0	0	0
Municipal | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Municipal | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Municipal | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Municipal | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Municipal | Current
Schedule of Financing Receivables [Line Items]
Loans	48,702	48,362	40,616
Residential |    Construction
Schedule of Financing Receivables [Line Items]
Loans	41,631	31,763	29,358
90+ Days & Accruing	0	0	0
Residential |    Construction | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Residential |    Construction | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Residential |    Construction | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Residential |    Construction | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	0	0
Residential |    Construction | Current
Schedule of Financing Receivables [Line Items]
Loans	41,631	31,763	29,358
Residential |    Term
Schedule of Financing Receivables [Line Items]
Loans	595,031	550,783	537,811
90+ Days & Accruing	0	0	190
Residential |    Term | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	79	348	549
Residential |    Term | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	77	169	918
Residential |    Term | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	166	1,780	986
Residential |    Term | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	322	2,297	2,453
Residential |    Term | Current
Schedule of Financing Receivables [Line Items]
Loans	594,709	548,486	535,358
Home equity line of credit
Schedule of Financing Receivables [Line Items]
Loans	73,938	73,632	74,594
90+ Days & Accruing	0	0	0
Home equity line of credit | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	473	741	251
Home equity line of credit | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	29	159	25
Home equity line of credit | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	135	131
Home equity line of credit | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	502	1,035	407
Home equity line of credit | Current
Schedule of Financing Receivables [Line Items]
Loans	73,436	72,597	74,187
Consumer
Schedule of Financing Receivables [Line Items]
Loans	20,819	22,976	23,333
90+ Days & Accruing	0	32	3
Consumer | 30-59 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	143	168	90
Consumer | 60-89 Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	28	192	202
Consumer | 90+ Days Past Due
Schedule of Financing Receivables [Line Items]
Loans	0	32	3
Consumer | All Past Due
Schedule of Financing Receivables [Line Items]
Loans	171	392	295
Consumer | Current
Schedule of Financing Receivables [Line Items]
Loans	$ 20,648	$ 22,584	$ 23,038

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