LOSS PER SHARE (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
LOSS PER SHARE [Abstract]
Effect of dilutive stock options (in shares)								179,000
Percentage of outstanding convertible preferred stock eligible to be converted into common stock	100.00%						100.00%
Number of shares of outstanding convertible preferred stock eligible to be converted into common stock (in shares)	1,623,000						1,623,000
Numerator [Abstract]
Net (loss) income	$ (1,489,000)	$ (586,000)	$ 55,000	$ (70,000)	$ 304,000	$ 6,000	$ (2,020,000)	$ 240,000
Preferred dividend	125,000			125,000			375,000	375,000
Net loss available to common stockholders	$ (1,614,000)			$ (195,000)			$ (2,395,000)	$ (135,000)
Denominator [Abstract]
Basic weighted average number of common shares outstanding (in shares)	3,642,000			3,607,000			3,627,000	3,600,000
Diluted weighted average number of common shares outstanding (in shares)	3,642,000			3,607,000			3,627,000	3,600,000
Basic (loss) earnings per common share (in dollars per share)	$ (0.44)			$ (0.05)			$ (0.66)	$ (0.04)
Diluted (loss) earnings per common share (in dollars per share)	$ (0.44)			$ (0.05)			$ (0.66)	$ (0.04)