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SELECTED QUARTERLY INFORMATION (UNAUDITED) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Unaudited quarterly data
Total revenue	$ 7,466us-gaap_Revenues	$ 6,788us-gaap_Revenues	$ 6,945us-gaap_Revenues	$ 6,482us-gaap_Revenues	$ 6,128us-gaap_Revenues	$ 5,794us-gaap_Revenues	$ 6,042us-gaap_Revenues	$ 5,696us-gaap_Revenues
Gross profit	2,441us-gaap_GrossProfit	1,919us-gaap_GrossProfit	1,877us-gaap_GrossProfit	2,756us-gaap_GrossProfit	2,568us-gaap_GrossProfit	2,249us-gaap_GrossProfit	2,230us-gaap_GrossProfit	2,151us-gaap_GrossProfit	8,992us-gaap_GrossProfit	9,198us-gaap_GrossProfit	11,333us-gaap_GrossProfit
Net income (loss)	$ (5,454)us-gaap_NetIncomeLoss	$ (2,976)us-gaap_NetIncomeLoss	$ 29us-gaap_NetIncomeLoss	$ (9,811)us-gaap_NetIncomeLoss	$ (5,125)us-gaap_NetIncomeLoss	$ (341)us-gaap_NetIncomeLoss	$ (1,119)us-gaap_NetIncomeLoss	$ (409)us-gaap_NetIncomeLoss	$ (17,282)us-gaap_NetIncomeLoss	$ (4,339)us-gaap_NetIncomeLoss	$ 617us-gaap_NetIncomeLoss
Diluted earnings (loss) per share (in dollars per share)	$ (0.31)us-gaap_EarningsPerShareDiluted	$ (0.17)us-gaap_EarningsPerShareDiluted		$ (0.55)us-gaap_EarningsPerShareDiluted	$ (0.30)us-gaap_EarningsPerShareDiluted	$ (0.02)us-gaap_EarningsPerShareDiluted	$ (0.06)us-gaap_EarningsPerShareDiluted	$ (0.02)us-gaap_EarningsPerShareDiluted	$ (1.03)us-gaap_EarningsPerShareDiluted	$ (0.40)us-gaap_EarningsPerShareDiluted	$ 0.03us-gaap_EarningsPerShareDiluted

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- Definition

The amount of net income (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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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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