Regulatory Capital - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Total capital (to risk weighted assets)
Actual, Amount	$ 286,038	$ 282,082
Actual, Ratio	0.161	0.157
Minimum Capital Requirements, Amount	$ 186,320	$ 188,448
Minimum Capital Requirements, Ratio	0.105	0.105
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 177,447	$ 179,475
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.100	0.100
Tier 1 capital (to risk weighted assets)
Actual, Amount	$ 267,795	$ 263,637
Actual, Ratio	0.151	0.147
Minimum Capital Requirements, Amount	$ 150,830	$ 152,553
Minimum Capital Requirements, Ratio	0.085	0.085
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 141,958	$ 143,580
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.080	0.080
Common equity tier 1 capital (to risk weighted assets)
Actual, Amount	$ 267,795	$ 263,637
Actual, Ratio	0.151	0.147
Minimum Capital Requirements, Amount	$ 124,213	$ 125,632
Minimum Capital Requirements, Ratio	0.070	0.070
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 115,341	$ 116,658
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065	0.065
Tier 1 capital (to average assets)
Actual, Amount	$ 267,795	$ 263,637
Actual, Ratio	0.118	0.116
Minimum Capital Requirements, Amount	$ 90,500	$ 91,163
Minimum Capital Requirements, Ratio	0.040	0.040
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 113,125	$ 113,954
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.050	0.050