Note 8 - Advances From the Federal Home Loan Bank ("FHLB") of New York - Long-term Advances (Details) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Year one	$ 37,500,000	$ 59,000,000
Long-Term Federal Home Loan Bank Advances	130,189,663	$ 43,319,254
Federal Home Loan Bank of New York [Member]
Year one	$ 59,016,480
Year one	5.52%	4.59%
Year two	$ 58,851,051
Year three	44,797,983
Year four	2,753,137
Year five	2,271,012
Federal Home Loan Bank of New York [Member] \| Federal Home Loan Bank Advances, Amortizing [Member]
Year one	$ 5,496,642	$ 3,101,059
Year one	2.58%
Year two	$ 4,847,744	3,124,634
Year two	2.91%
Year three	$ 3,297,983	2,354,973
Year three	4.12%
Year four	$ 2,753,137	678,275
Year four	4.98%
Year five	$ 2,271,012	0
Year five	5.05%
After year five		0
Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year	3.59%
Long-Term Federal Home Loan Bank Advances	$ 18,666,518	9,258,941
Federal Home Loan Bank of New York [Member] \| Federal Home Loan Bank Advances, Non Repo [Member]
Year one	$ 16,019,838	23,037,169
Year one	3.92%
Year two	$ 54,003,307	6,019,839
Year two	4.31%
Year three	$ 41,500,000	5,003,306
Year three	4.57%
Year four		0
Federal Home Loan Bank, Advances, Activity for Year, Average Interest Rate for Year	4.35%
Long-Term Federal Home Loan Bank Advances	$ 111,523,145	$ 34,060,314

The calculated weighted average interest rate for Federal Home Loan Bank advances for the period ended as of the Balance Sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-Publisher FASB
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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Weighted average interest rate of advance from Federal Home Loan Bank (FHLBank) due in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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