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								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings (loss) per share (EPS):
Earnings (loss) per share from continuing operations, basic and diluted	$ 0.00	$ (0.06)	$ (0.10)	$ (0.10)	$ (0.07)	$ (0.06)	$ 0.38	$ (0.20)	$ (0.27)	$ 0.05	$ (0.48)
Earnings (loss) per share from discontinued operations, basic and diluted	(0.01)	0.00	0.01	0.00	0.00	0.00	0.03	(0.01)	0.01	0.02	0.08
Earnings Per Share, Basic and Diluted	$ (0.01)	$ (0.06)	$ (0.09)	$ (0.10)	$ (0.08)	$ (0.06)	$ 0.41	$ (0.21)	$ (0.26)	$ 0.07	$ (0.40)
EPS numerator - basic and diluted:
Income (Loss) from Continuing Operations	$ (108)	$ (1,908)	$ (3,347)	$ (3,570)	$ (2,484)	$ (2,029)	$ 12,774	$ (6,654)	$ (8,933)	$ 1,607	$ (15,786)
Income (Loss) from Discontinued Operations, Net of Taxes	(184)	35	209	83	(142)	(55)	1,103	(184)	143	722	2,592
Net income (loss)	$ (292)	$ (1,873)	$ (3,138)	$ (3,487)	$ (2,626)	$ (2,084)	$ 13,877	$ (6,838)	$ (8,790)	$ 2,329	$ (13,194)
EPS denominator (in thousands):
Weighted-average common stock outstanding - basic (in shares)	32,227	33,572	33,252	34,631	34,274	34,687	33,525	33,053	33,174	33,869	32,843
Common stock equivalents: stock options and other stock-based awards (a) (in shares)									0	215	0
Weighted-average number of common stock outstanding - diluted (in shares)					34,274	34,687	34,007	33,053	33,174	34,084	32,843