EARNINGS (LOSS) PER SHARE (Computation of basic and diluted earnings (loss) per 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
Earnings (loss) per share (EPS):
Income (loss) from continuing operations (in dollars per share)	$ (0.04)	$ (0.02)	$ (0.13)	$ (0.04)
Income (loss) from discontinued operations (in dollars per share)	0.00	0.06	0.42	0.04
Basic and diluted earnings (loss) per share	$ (0.04)	$ 0.04	$ 0.29	$ 0.00
EPS numerator - basic and diluted:
Income (loss) from continuing operations	$ (1,353)	$ (734)	$ (4,250)	$ (1,213)
Income (loss) from discontinued operations, net of income taxes	(11)	1,960	13,607	1,125
Net income (loss)	$ (1,364)	$ 1,226	$ 9,357	$ (88)
EPS denominator:
Weighted-average common stock outstanding - basic (in shares)	32,277	32,048	32,212	32,104
Common stock equivalents: stock options and restricted stock units	0	0	0	0
Weighted-average number of common stock outstanding - diluted (in shares)	32,277	32,048	32,212	32,104