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Note 2 - Securities Available for Sale (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Proceeds from Sale of Debt Securities, Available-for-Sale	$ 0	$ 0
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	52
Debt Securities, Available-for-Sale, Allowance for Credit Loss	$ 0
Debt Securities, Available-for-Sale	137,732,521		$ 140,307,447
Asset Pledged as Collateral [Member] | Deposits [Member]
Debt Securities, Available-for-Sale	$ 5,658,678		$ 5,741,240
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Financing Receivable, Affirmed Commitment to Support, Percentage	100.00%

X

- Definition

Percentage of financing receivables that have affirmed commitment to support.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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