EARNINGS (LOSS) PER SHARE (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator for basic and diluted earnings (loss) per common share:
Net income (loss)		$ 305,000	$ 16,000	$ 370,000	$ (44,000)
Denominator:
Denominator for basic earnings (loss) per share - weighted average common shares outstanding		3,592,000	3,611,000	3,588,000	3,605,000
Dilutive securities	[1]	90,000	109,000	126,000	0
Denominator for diluted earnings (loss) per share - weighted average common shares outstanding		3,682,000	3,720,000	3,714,000	3,605,000

[1] Dilutive securities consist of “in the money” stock options.