Regulatory Capital - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations
Capital conservation buffer	0.025
Total risk-based capital (to risk-weighted assets), Amount, Actual	$ 303,846	$ 298,293
Total risk--based capital ratio	0.1463	0.1443
Total risk-based capital (to risk-weighted assets), Required for Capital Adequacy Purposes, Amount	$ 166,101	$ 165,370
Total risk-based capital ratio, Required for capital adequacy purposes effective	0.0800	0.0800
Total risk-based capital (to risk-weighted assets), To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 207,627	$ 206,712
Total risk-based capital ratio, To be well-capitalized under prompt corrective action regulations	0.1000	0.1000
Common equity tier 1 (to risk-weighted assets), Amount, Actual	$ 267,884	$ 262,454
CET1, Required for capital adequacy purposes effective	0.1290	0.1270
CEIT 1, Required for Capital Adequacy Purposes, Amount, Actual	$ 93,432	$ 93,020
CEIT 1, Required for Capital Adequacy Purposes, Ratio, Actual	0.0450	0.0450
CEIT 1, To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 134,957	$ 134,363
CEIT 1, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio	0.0650	0.0650
Assets	$ 277,884	$ 272,454
Tier I risk-based capital ratio	0.1338	0.1318
Tier 1 capital (to risk-weighted assets), Required for Capital Adequacy Purposes, Amount, Actual	$ 124,576	$ 124,027
Tier I risk-based capital ratio, Required for capital adequacy purposes effective	0.0600	0.0600
Tier 1 capital (to risk-weighted assets), To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 166,101	$ 165,370
Tier I risk-based capital ratio, To be well-capitalized under prompt corrective action regulations	0.0800	0.0800
Tier 1 capital (to average total assets), Amount, Actual	$ 277,884	$ 272,454
Leverage ratio	0.1139	0.1114
Tier 1 capital (to average total assets), Required for Capital Adequacy Purposes, Amount, Actual	$ 97,580	$ 97,800
Leverage ratio, Required for capital adequacy purposes effective	0.0400	0.0400
Tier 1 capital (to average total assets), To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 121,975	$ 122,250
Leverage ratio, To be well-capitalized under prompt corrective action regulations	0.0500	0.0500
Including capital conservation buffer
Compliance with Regulatory Capital Requirements under Banking Regulations
Total risk-based capital ratio, Required for capital adequacy purposes effective	0.105
CEIT 1, Required for Capital Adequacy Purposes, Ratio, Actual	0.070
Tier I risk-based capital ratio, Required for capital adequacy purposes effective	0.085
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations
Capital conservation buffer	0.025
Total risk-based capital (to risk-weighted assets), Amount, Actual	$ 295,499	$ 287,206
Total risk--based capital ratio	0.1436	0.1402
Total risk-based capital (to risk-weighted assets), Required for Capital Adequacy Purposes, Amount	$ 164,659	$ 163,911
Total risk-based capital ratio, Required for capital adequacy purposes effective	0.0800	0.0800
Total risk-based capital (to risk-weighted assets), To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 205,824	$ 204,889
Total risk-based capital ratio, To be well-capitalized under prompt corrective action regulations	0.1000	0.1000
Common equity tier 1 (to risk-weighted assets), Amount, Actual	$ 269,759	$ 261,584
CET1, Required for capital adequacy purposes effective	0.1311	0.1276
CEIT 1, Required for Capital Adequacy Purposes, Amount, Actual	$ 92,621	$ 92,200
CEIT 1, Required for Capital Adequacy Purposes, Ratio, Actual	0.0450	0.0450
CEIT 1, To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 133,786	$ 133,178
CEIT 1, To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio	0.0650	0.0650
Assets	$ 269,759	$ 261,584
Tier I risk-based capital ratio	0.1311	0.1276
Tier 1 capital (to risk-weighted assets), Required for Capital Adequacy Purposes, Amount, Actual	$ 123,495	$ 122,934
Tier I risk-based capital ratio, Required for capital adequacy purposes effective	0.0600	0.0600
Tier 1 capital (to risk-weighted assets), To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 164,659	$ 163,911
Tier I risk-based capital ratio, To be well-capitalized under prompt corrective action regulations	0.0800	0.0800
Tier 1 capital (to average total assets), Amount, Actual	$ 269,759	$ 261,584
Leverage ratio	0.1110	0.1074
Tier 1 capital (to average total assets), Required for Capital Adequacy Purposes, Amount, Actual	$ 97,204	$ 97,355
Leverage ratio, Required for capital adequacy purposes effective	0.0400	0.0400
Tier 1 capital (to average total assets), To be Well Capitalized Under Prompt Corrective Action Regulations, Amount	$ 121,504	$ 121,693
Leverage ratio, To be well-capitalized under prompt corrective action regulations	0.0500	0.0500
Bank | Including capital conservation buffer
Compliance with Regulatory Capital Requirements under Banking Regulations
Total risk-based capital ratio, Required for capital adequacy purposes effective	0.105
CEIT 1, Required for Capital Adequacy Purposes, Ratio, Actual	0.070
Tier I risk-based capital ratio, Required for capital adequacy purposes effective	0.085