Fair Value of Financial Instruments - Carrying Amounts and Estimated FV by FV Hierarchy (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Financial assets:
Debt securities held to maturity, Fair Value	$ 33,988,637	$ 36,749,812
Carrying Amount
Financial assets:
Loans, net	184,964,182	189,415,521
Financial liabilities:
Interest-bearing deposits	211,404,438	209,554,301
Fixed rate, fixed term FHLB advances	28,562,820	37,062,820
Estimated Fair Value
Financial assets:
Loans, net	176,740,000	184,275,000
Financial liabilities:
Interest-bearing deposits	200,417,000	198,751,000
Fixed rate, fixed term FHLB advances	28,520,288	37,175,221
Level 1
Financial assets:
Loans, net	0	0
Financial liabilities:
Interest-bearing deposits	0	0
Fixed rate, fixed term FHLB advances	0	0
Level 2
Financial assets:
Loans, net	0	0
Financial liabilities:
Interest-bearing deposits	200,417,000	198,751,000
Fixed rate, fixed term FHLB advances	28,520,288	37,175,221
Level 3
Financial assets:
Loans, net	176,740,000	184,275,000
Financial liabilities:
Interest-bearing deposits	0	0
Fixed rate, fixed term FHLB advances	0	0
U.S. government sponsored agencies \| Carrying Amount
Financial assets:
Debt securities held to maturity, Fair Value	27,332,368	27,632,778
U.S. government sponsored agencies \| Estimated Fair Value
Financial assets:
Debt securities held to maturity, Fair Value	27,367,652	27,920,369
U.S. government sponsored agencies \| Level 1
Financial assets:
Debt securities held to maturity, Fair Value	0	0
U.S. government sponsored agencies \| Level 2
Financial assets:
Debt securities held to maturity, Fair Value	27,367,652	27,920,369
U.S. government sponsored agencies \| Level 3
Financial assets:
Debt securities held to maturity, Fair Value	0	0
U.S. Treasury securities
Financial assets:
Debt securities held to maturity, Fair Value	6,620,985	8,829,443
U.S. Treasury securities \| Carrying Amount
Financial assets:
Debt securities held to maturity, Fair Value	6,613,280	8,798,979
U.S. Treasury securities \| Estimated Fair Value
Financial assets:
Debt securities held to maturity, Fair Value	6,620,985	8,829,443
U.S. Treasury securities \| Level 1
Financial assets:
Debt securities held to maturity, Fair Value	6,620,985	8,829,443
U.S. Treasury securities \| Level 2
Financial assets:
Debt securities held to maturity, Fair Value	0	0
U.S. Treasury securities \| Level 3
Financial assets:
Debt securities held to maturity, Fair Value	$ 0	$ 0