INVESTMENT SECURITIES HELD TO MATURITY - Maturity of held to maturity securities (Details) - U.S. Treasury Strips	Sep. 30, 2025 USD ($)
Amortized Cost
INVESTMENT SECURITIES HELD TO MATURITY
2026	$ 1,270,666
2027 to 2030	18,886,727
Total investment securities held-to-maturity	20,157,393
Estimated Fair Value
INVESTMENT SECURITIES HELD TO MATURITY
2026	1,271,350
2027 to 2030	18,919,649
Total investment securities held-to-maturity	$ 20,190,999