FAIR VALUE MEASUREMENTS - Schedule of fair value on a recurring basis (Details) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Assets:
Investment securities available for sale, net of allowance for credit losses of $0 at June 30, 2026 and December 31, 2025 (amortized cost of $8,794,555 and $9,095,188 at June 30, 2026 and December 31, 2025, respectively)	$ 8,367,925	$ 8,686,675
Level 1
Assets:
Total	22,501,246	9,855,587
Level 2
Assets:
Investment securities available for sale, net of allowance for credit losses of $0 at June 30, 2026 and December 31, 2025 (amortized cost of $8,794,555 and $9,095,188 at June 30, 2026 and December 31, 2025, respectively)	8,367,925	8,686,675
Total	12,453,836	12,835,238
Level 3
Assets:
Total	87,258,443	84,201,789
Recurring basis
Assets:
Investment securities available for sale, net of allowance for credit losses of $0 at June 30, 2026 and December 31, 2025 (amortized cost of $8,794,555 and $9,095,188 at June 30, 2026 and December 31, 2025, respectively)	8,367,925	8,686,675
Other investments - mutual funds	307,890	301,159
Total	8,675,815	8,987,834
Recurring basis \| Level 1
Assets:
Other investments - mutual funds	307,890	301,159
Total	307,890	301,159
Recurring basis \| Level 2
Assets:
Investment securities available for sale, net of allowance for credit losses of $0 at June 30, 2026 and December 31, 2025 (amortized cost of $8,794,555 and $9,095,188 at June 30, 2026 and December 31, 2025, respectively)	8,367,925	8,686,675
Total	$ 8,367,925	$ 8,686,675

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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+ Details