Regulatory Capital - Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations (Details) $ in Thousands	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Total capital (to risk weighted assets)
Actual, Amount	$ 259,940	$ 252,843
Actual, Ratio	15.4	15.3
Minimum Capital Requirements, Amount	$ 176,980	$ 173,923
Minimum Capital Requirements, Ratio	10.5	10.5
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 168,553	$ 165,641
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.0	10.0
Tier 1 capital (to risk weighted assets)
Actual, Amount	$ 239,556	$ 232,458
Actual, Ratio	14.2	14.0
Minimum Capital Requirements, Amount	$ 143,270	$ 140,795
Minimum Capital Requirements, Ratio	8.5	8.5
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 134,842	$ 132,513
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.0	8.0
Common equity tier 1 capital (to risk weighted assets)
Actual, Amount	$ 239,556	$ 232,458
Actual, Ratio	14.2	14.0
Minimum Capital Requirements, Amount	$ 117,987	$ 115,948
Minimum Capital Requirements, Ratio	7.0	7.0
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 109,559	$ 107,666
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.5	6.5
Tier 1 capital (to average assets)
Actual, Amount	$ 239,556	$ 232,458
Actual, Ratio	10.8	11.0
Minimum Capital Requirements, Amount	$ 88,547	$ 84,799
Minimum Capital Requirements, Ratio	4.0	4.0
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 110,683	$ 105,999
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.0	5.0