Note 2 - Securities Available for Sale (Details Textual)	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Proceeds from Sale of Debt Securities, Available-for-Sale	$ 0	$ 0
Held-to-Maturity, Securities in Unrealized Loss Positions	44
Debt Securities, Available-for-Sale	$ 68,888,179	85,100,578
Debt Securities, Available-for-Sale, Allowance for Credit Loss	0
Asset Pledged as Collateral [Member] | Deposits [Member]
Debt Securities, Available-for-Sale	$ 113,415	$ 126,662