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STOCK-BASED COMPENSATION PLANS (Details 2) shares in Thousands	12 Months Ended
	Dec. 31, 2017 $ / shares shares
Outstanding Number of Shares | shares	2,052
WA Remaining Contractual Life (years)	6 years 6 months 7 days
WA Outstanding Strike Price	$ 0.56
Exercisable Number of Shares | shares	1,460
Remaining Exercisable Contractual Life (years)	5 years 4 months 10 days
WA Exercisable Strike Price	$ 0.40
Exercise Price Range One [Member]
Exercise Price Minimum	0
Exercise Price Maximum	$ 0.50
Outstanding Number of Shares | shares	1,540
WA Remaining Contractual Life (years)	6 years 11 months 16 days
WA Outstanding Strike Price	$ 0.27
Exercisable Number of Shares | shares	1,155
Remaining Exercisable Contractual Life (years)	6 years 3 months
WA Exercisable Strike Price	$ 0.24
Exercise Price Range Two [Member]
Exercise Price Minimum	0.51
Exercise Price Maximum	$ 1.00
Outstanding Number of Shares | shares	283
WA Remaining Contractual Life (years)	3 years 7 months 2 days
WA Outstanding Strike Price	$ 0.89
Exercisable Number of Shares | shares	233
Remaining Exercisable Contractual Life (years)	2 years 3 months 14 days
WA Exercisable Strike Price	$ 0.93
Exercise Price Range Three [Member]
Exercise Price Minimum	1.01
Exercise Price Maximum	$ 1.50
Outstanding Number of Shares | shares	69
WA Remaining Contractual Life (years)	3 years 1 month 2 days
WA Outstanding Strike Price	$ 1.24
Exercisable Number of Shares | shares	54
Remaining Exercisable Contractual Life (years)	1 year 2 months 8 days
WA Exercisable Strike Price	$ 1.19
Exercise Price Range Four [Member]
Exercise Price Minimum	1.51
Exercise Price Maximum	$ 2.00
Outstanding Number of Shares | shares	30
WA Remaining Contractual Life (years)	4 years 2 months 8 days
WA Outstanding Strike Price	$ 1.73
Exercisable Number of Shares | shares	18
Remaining Exercisable Contractual Life (years)	5 months 26 days
WA Exercisable Strike Price	$ 1.68
Exercise Price Range Five [Member]
Exercise Price Minimum	2.00
Exercise Price Maximum	$ 3.00
Outstanding Number of Shares | shares	130
WA Remaining Contractual Life (years)	9 years 11 months 12 days
WA Outstanding Strike Price	$ 2.65
Exercisable Number of Shares | shares	0
Remaining Exercisable Contractual Life (years)	0 years
WA Exercisable Strike Price	$ 0

X

- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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X

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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X

- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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