RESTRUCTURING COSTS (Details) - 2017 Strategic Restructuring Plan	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2018 USD ($)	Sep. 30, 2018 USD ($) position	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges, number of position eliminated \| position		56
Restructuring charges, percentage of position eliminated		41.00%
Charges	$ 0	$ 0	$ 1,600,000
Restructuring adjustment		(44,000)
Employee Separation Costs
Restructuring Cost and Reserve [Line Items]
Charges		0
Restructuring adjustment		$ (44,000)

The number of positions eliminated during the period as a result of restructuring activities.

No definition available.

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- Definition

The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

+ References

No definition available.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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