NET INCOME PER SHARE (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
NET INCOME PER SHARE [Abstract]
Net income	$ 12,070	$ 52,443
Weighted average common shares outstanding - basic (in shares)	10,722,401	10,722,323
Potential shares exercisable under stock option plans (in shares)	143,280	256,947
LESS: Shares which could be repurchased under treasury stock method (in shares)	(139,560)	(198,759)
Weighted average common shares outstanding - diluted (in shares)	10,726,121	10,780,511
Net income per share [Abstract]
Basic (in dollars per share)	$ 0	$ 0
Diluted (in dollars per share)	$ 0	$ 0
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	264,675	130,338