Note 11 - Earnings Per Common Share - Summary of Earnings Per Share Calculation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Income	$ 1,171,264	$ 1,247,305	$ 2,237,139	$ 4,390,722
Weighted average shares of common stock outstanding - Basic (in shares)	3,464,765	3,408,906	3,449,465	3,400,917
Net Income Per Common Share - Basic (in dollars per share)	$ 0.34	$ 0.37	$ 0.65	$ 1.29
Warrants, Options and Convertible Notes (in shares)	0	894	0	888
Diluted (in shares)	3,464,765	3,409,800	3,449,465	3,401,805
Net Income Per Common Share - Diluted (in dollars per share)	$ 0.34	$ 0.37	$ 0.65	$ 1.29