Earnings Per Share - Earnings Per Share (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 8,098,766	$ 5,513,608
Weighted average shares outstanding	3,342,630	3,351,731
Effect of diluted employee stock options	166,867	100,892
Denominator for dilutive earnings per share	3,509,497	3,452,623
Basic earnings per share	$ 2.42	$ 1.65
Diluted earnings per share	$ 2.31	$ 1.60