Regulatory Capital Matters - Schedule of Actual and Required Capital Amounts and Ratios, Exclusive of Capital Conservation Buffer (Details) $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual amount	$ 240,012	$ 229,544
Tier 1 capital (to risk-weighted assets), actual amount	217,123	208,707
Common equity Tier 1 capital (to risk-weighted assets), actual amount	217,123	208,707
Tier 1 capital (to average assets), actual amount	$ 217,123	$ 208,707
Total capital (to risk-weighted assets), actual ratio	0.1279	0.1377
Tier 1 capital (to risk-weighted assets), actual ratio	0.1157	0.1252
Common equity Tier 1 capital (to risk-weighted assets), actual ratio	0.1157	0.1252
Tier 1 capital (to average assets), actual ratio	0.0930	0.0957
Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), actual amount	$ 238,097	$ 227,773
Tier 1 capital (to risk-weighted assets), actual amount	215,208	206,936
Common equity Tier 1 capital (to risk-weighted assets), actual amount	215,208	206,936
Tier 1 capital (to average assets), actual amount	$ 215,208	$ 206,936
Total capital (to risk-weighted assets), actual ratio	0.1269	0.1366
Tier 1 capital (to risk-weighted assets), actual ratio	0.1147	0.1241
Common equity Tier 1 capital (to risk-weighted assets), actual ratio	0.1147	0.1241
Tier 1 capital (to average assets), actual ratio	0.0922	0.0949
Total capital (to risk-weighted assets), amount, required for capital adequacy purposes	$ 150,106	$ 133,353
Tier 1 capital (to risk-weighted assets), amount, required for capital adequacy purposes	112,579	100,014
Common equity Tier 1 capital (to risk-weighted assets), amount, required for capital adequacy purposes	84,435	75,011
Tier 1 capital (to average assets), amount, required for capital adequacy purposes	$ 93,362	$ 87,207
Total capital (to risk-weighted assets), ratio, required for capital adequacy purposes	0.0800	0.0800
Tier 1 capital (to risk-weighted assets), ratio, required for capital adequacy purposes	0.0600	0.0600
Common equity Tier 1 capital (to risk-weighted assets), ratio, required for capital adequacy purposes	0.0450	0.0450
Tier 1 capital (to average assets), ratio, required for capital adequacy purposes	0.0400	0.0400
Total capital (to risk-weighted assets), amount, minimum to be considered "Well Capitalized"	$ 187,632	$ 166,691
Tier 1 capital (to risk-weighted assets), amount, minimum to be considered "Well Capitalized"	150,106	133,353
Common equity Tier 1 capital (to risk-weighted assets), amount, minimum to be considered "Well Capitalized"	121,961	108,349
Tier 1 capital (to average assets), amount, minimum to be considered "Well Capitalized"	$ 116,703	$ 109,008
Total capital (to risk-weighted assets), ratio, minimum to be considered "Well Capitalized"	0.1000	0.1000
Tier 1 capital (to risk-weighted assets), ratio, minimum to be considered "Well Capitalized"	0.0800	0.0800
Common equity Tier 1 capital (to risk-weighted assets), ratio, minimum to be considered "Well Capitalized"	0.0650	0.0650
Tier 1 capital (to average assets), ratio, minimum to be considered "Well Capitalized"	0.0500	0.0500