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		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings (loss) per share (EPS):
Income (loss) from continuing operations (in dollars per share)	$ (0.06)	$ (0.06)	$ (0.26)	$ 0.12
Income (loss) from discontinued operations (in dollars per share)	0.00	0.00	0.01	0.03
Basic and diluted earnings (loss) per share	$ (0.06)	$ (0.06)	$ (0.25)	$ 0.15
EPS numerator - basic and diluted:
Income (loss) from continuing operations	$ (1,908)	$ (2,029)	$ (8,825)	$ 4,091
Income (loss) from discontinued operations, net of income taxes	35	(55)	327	864
Net income (loss)	$ (1,873)	$ (2,084)	$ (8,498)	$ 4,955
EPS denominator:
Weighted-average common stock outstanding - basic (in shares)	33,572	34,687	34,121	33,784
Common stock equivalents: stock options and other stock-based awards (a)	0	0	0	11
Weighted-average number of common stock outstanding - diluted (in shares)	33,572	34,687	34,121	33,795