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STOCK-BASED COMPENSATION PLANS (Details 1) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Summary of stock option activity under the option Plan
Balance Beginning	2,136
Number of Shares, Granted	65	200
Number of Shares, Forfeited	(6)
Number of Shares, Exercised	(237)
Balance Ending	1,958		2,136
Number of Shares, Exercisable at March 31, 2018	1,261
Weighted Average Exercise Price, Outstanding Beginning	$ 0.54
Weighted Average Exercise Price, Granted	0	$ 0.21
Weighted Average Exercise Price, Forfeited	1.28
Weighted Average Exercise Price, Exercised	0.36
Weighted Average Exercise Price, Outstanding Ending	0.54		$ 0.54
Weighted Average Exercise Price, Exercisable	$ 0.4
Weighted Average Remaining Contractual Life, Outstanding	6 years 3 months 7 days		6 years 3 months 22 days
Weighted Average Remaining Contractual Life Exercisable	4 years 11 months 26 days
Aggregate Intrinsic Value, Outstanding	$ 5,579		$ 5,645
Aggregate Intrinsic Value, Exercisable	$ 3,720

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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-Publisher FASB
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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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