EARNINGS PER SHARE (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Basic and diluted earnings per share calculation:
Net income to common stockholders	$ 514,965	$ 583,051
Weighted average number of common shares outstanding - basic (in shares)	4,473,591	4,511,965
Basic net income per share (in dollars per share)	$ 0.12	$ 0.13
Weighted average number of common shares outstanding - diluted (in shares)	4,490,795	4,511,965
Diluted net income per share (in dollars per share)	$ 0.11	$ 0.13