Note 7 - Long-term Debt - Schedule of Debt (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Long-term debt	$ 27,388,264	$ 27,394,417
Junior Subordinated Debt [Member]
Long-term debt	26,804,000	26,804,000
Notes Payable to Banks [Member]
Long-term debt	$ 584,000	$ 590,000