Note 11 - Earnings Per Common Share - Summary of Earnings Per Share Calculation (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net Income	$ 3,369,211	$ 2,814,736	$ 9,649,552	$ 10,057,550
Weighted average shares of common stock outstanding - Basic (in shares)	3,540,746	3,510,740	3,538,148	3,506,920
Net Income Per Common Share - Basic (in dollars per share)	$ 0.95	$ 0.8	$ 2.73	$ 2.87
Unvested Restricted Stock Awards (in shares)	17,135	25,957	11,404	12,752
Weighted average shares of common stock - Diluted (in shares)	3,557,881	3,536,697	3,549,552	3,519,672
Net Income Per Common Share - Diluted (in dollars per share)	$ 0.95	$ 0.8	$ 2.72	$ 2.86