Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 395,474	$ 18,089	$ 454,601	$ 3,822
Weighted average common shares outstanding:
Average number of common shares outstanding - basic	7,619,549	7,619,469	7,619,509	7,619,469
Net effect of dilutive unvested restricted stock awards included for treasury stock method	734		490
Average number of common shares outstanding - diluted	7,620,283	7,619,469	7,619,999	7,619,469
Earnings per common share
Basic	$ 0.05	$ 0.00	$ 0.06	$ 0.00
Diluted	$ 0.05	$ 0.00	$ 0.06	$ 0.00