Equity and Regulatory Matters - Schedule of Capital Amounts and Ratios (Details) $ in Thousands	Mar. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Common Equity Tier 1 capital (to risk-weighted assets)
Actual, Amount	$ 18,044	$ 18,520
Actual, Ratio	0.11	0.118
For Capital Adequacy Purpose, Amount (Minimum)	$ 7,358	$ 7,091
For Capital Adequacy Purpose, Ratio (Minimum)	0.045	0.045
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 10,628	$ 10,243
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.065	0.065
Tier 1 capital (to risk-weighted assets)
Actual, Amount	$ 18,044	$ 18,520
Actual, Ratio	0.11	0.118
For Capital Adequacy Purpose, Amount (Minimum)	$ 9,810	$ 9,455
For Capital Adequacy Purpose, Ratio (Minimum)	0.06	0.06
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 13,080	$ 12,606
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.08	0.08
Total capital (to risk-weighted assets)
Actual, Amount	$ 19,362	$ 19,728
Actual, Ratio	0.118	0.125
For Capital Adequacy Purpose, Amount (Minimum)	$ 13,080	$ 12,606
For Capital Adequacy Purpose, Ratio (Minimum)	0.08	0.08
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 16,350	$ 15,758
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.10	0.10
Tier 1 capital (to average assets)
Actual, Amount	$ 18,044	$ 18,520
Actual, Ratio	0.066	0.069
For Capital Adequacy Purpose, Amount (Minimum)	$ 10,995	$ 10,709
For Capital Adequacy Purpose, Ratio (Minimum)	0.04	0.04
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 13,744	$ 13,387
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.05	0.05