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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings (loss) per share (EPS):
Income (loss) from continuing operations (in dollars per share)	$ (0.03)	$ (0.06)	$ (0.03)	$ (0.26)
Income (loss) from discontinued operations (in dollars per share)	0.00	0.00	0.00	0.01
Basic and diluted earnings (loss) per share	$ (0.03)	$ (0.06)	$ (0.03)	$ (0.25)
EPS numerator - basic and diluted:
Income (loss) from continuing operations	$ (832)	$ (1,908)	$ (902)	$ (8,825)
Income (loss) from discontinued operations, net of income taxes	(16)	35	(34)	327
Net income (loss)	$ (848)	$ (1,873)	$ (936)	$ (8,498)
EPS denominator:
Weighted-average common stock outstanding - basic (in shares)	32,151	33,572	32,120	34,121
Common stock equivalents: stock options and other stock-based awards (a)	0	0	0	0
Weighted-average number of common stock outstanding - diluted (in shares)	32,151	33,572	32,120	34,121

Net Income Loss Available To Common Stockholders Basic And Diluted [Abstract]

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Per basic and diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation, when the per share amount is the same.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount after tax of income (loss) from continuing operations attributable to the parent.

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The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

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Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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