Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income (loss)	$ 629,062	$ 861,299	$ 411,247	$ 337,124	$ (22,144)	$ (356,424)	$ 1,901,608	$ (41,444)
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	10,601,521			9,277,043			9,757,458	9,269,834
Net effect of dilutive unvested restricted stock awards included for treasury stock method	33,486			13,941			29,859
Average number of common shares outstanding - diluted	10,635,006			9,290,984			9,787,317	9,269,834
Earnings per common share
Basic	$ 0.06			$ 0.04			$ 0.19	$ (0.00)
Diluted	$ 0.06			$ 0.04			$ 0.19	$ (0.00)