Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income	$ 136,845	$ 395,474	$ 324,668	$ 454,601
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	7,640,991	7,619,549	7,635,885	7,619,509
Net effect of dilutive unvested restricted stock awards included for treasury stock method	9,305	734	7,095	490
Average number of common shares outstanding - diluted	7,650,296	7,620,283	7,642,980	7,619,999
Earnings per common share
Basic	$ 0.02	$ 0.05	$ 0.04	$ 0.06
Diluted	$ 0.02	$ 0.05	$ 0.04	$ 0.06