EARNINGS PER COMMON SHARE - Basic and Diluted Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income (loss)
Income (loss) from continuing operations	$ (307)	$ 381	$ (388)	$ 1,729
Loss from discontinued operations, net of income taxes	(4)	(28)	(26)	(43)
Net income (loss)	$ (311)	$ 353	$ (414)	$ 1,686
Per common share – basic
Income from continuing operations (dollars per share)	$ (0.05)	$ 0.06	$ (0.06)	$ 0.28
Loss from discontinued operations (dollars per share)	0.00	0.00	0.00	(0.01)
Net income per common share – basic (dollars per share)	(0.05)	0.06	(0.06)	0.27
Per common share – diluted
Income from continuing operations (dollars per share)	(0.05)	0.06	(0.06)	0.27
Loss from discontinued operations (dollars per share)	0.00	0.00		(0.01)
Net income per common share – diluted (dollars per share)	$ (0.05)	$ 0.06	$ (0.06)	$ 0.26
Weighted Average Common Shares Outstanding:
Basic (shares)	6,370	6,294	6,342	6,263
Diluted (shares)	6,370	6,472	6,342	6,458