Note 13 - Earnings Per Common Share - Summary of Earnings Per Share Calculation (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Income available to common stockholders									$ 13,294,793	$ 6,561,403
Weighted Average Shares of Common Stock Outstanding (in shares)									3,507,883	3,462,868
Net Income Per Common Share - Basic (in dollars per share)	$ 0.92	$ 0.8	$ 1.1	$ 0.97	$ 0.88	$ 0.36	$ 0.34	$ 0.31	$ 3.79	$ 1.89
Unvested Restricted Stock Awards (in shares)									18,953	0
Weighted Average Shares of Common Stock Outstanding - Diluted (in shares)									3,526,836	3,462,868
Income available to common stockholders									$ 13,294,793	$ 6,561,403
Net Income Per Common Share - Diluted (in dollars per share)	$ 0.91	$ 0.8	$ 1.09	$ 0.97	$ 0.88	$ 0.36	$ 0.34	$ 0.31	$ 3.77	$ 1.89