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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator
Net (loss) income available to common shareholders	$ (824)	[1]	$ (1,245)	$ (1,308)	$ (1,685)	$ (523)	$ (964)	$ (519)	$ (1,944)	$ (5,062)	$ (3,950)	$ 8,364
Derivative liability - warrants										(183)	(64)	(1,799)
Accretion on convertible preferred stock										0	0	222
Numerator for dilutive (loss) income per common share										$ (5,245)	$ (4,014)	$ 6,787
Denominator
Weighted average shares used to compute basic (loss) income per common share (in shares)										31,420	27,433	24,333
Derivative liability - warrants (in shares)										7	16	28
Convertible preferred stock (in shares)										0	0	3,137
Stock options (in shares)										0	0	249
Denominator for diluted (loss) income per common share (in shares)										31,427	27,449	27,747
Earnings Per Share, Basic and Diluted [Abstract]
Basic (loss) income per common share	$ (0.03)		$ (0.04)	$ (0.04)	$ (0.05)	$ (0.02)	$ (0.04)	$ (0.02)	$ (0.07)	$ (0.16)	$ (0.14)	$ 0.34
Diluted (loss) income per common share										$ (0.17)	$ (0.15)	$ 0.24
[1] *Fourth quarter 2017 period includes approximately $1.5 million of non-recurring severance and expenses related to former members of the Company’s executive management team and related closure of the corporate office in Purchase, New York.

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