INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of year	$ 6,414	$ 3,159	$ 5,121
Additions to prior year tax positions		3,354
Reductions to prior year tax positions	(833)		(625)
Expirations	(203)	(209)	(1,115)
Foreign currency translation	112	110	(222)
Unrecognized tax benefits, end of year	$ 5,490	$ 6,414	$ 3,159

Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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