INCOME TAXES (Details 5) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Amount of unrecognized tax benefits as of the beginning of the year	$ 8,892	$ 758
Decreases as a result of tax positions taken in a prior period	(956)	(78)
Increases as a result of tax positions taken in a prior period	1	53
Increases as a result of tax positions taken in the current period	1,750	8,159
Amount of unrecognized tax benefits as of the end of the year	9,687	8,892
Unrecognized tax benefits that would affect the effective tax rate	13,000	11,500
Unrecognized tax benefits, income tax penalties and interest accrued	$ 3,300	$ 2,600

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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