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INCOME TAXES (Reconciliation of Uncertain Tax Benefits) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Reconciliation of the beginning and ending amount of liabilities associated with uncertain tax benefits, excluding interest and penalties |  |  |
Unrecognized tax benefits, opening balance | $ 2,956 | $ 4,908 | $ 5,825
Settlement of liability reclassified as income tax payable | 0 | 0 | 0
Payments on liability | 0 | 0 | 0
Tax positions taken in a prior period |  |  |
Gross increases | 0 | 0 | 0
Gross decreases | (467) | (705) | 0
Gross decreases |  |  |
Gross increases | 92 | 716 | 1,182
Gross decreases | 0 | 0 | 0
Lapse of applicable statute of limitations | (591) | (1,970) | (2,121)
Currency translation adjustments | (24) |  |
Currency translation adjustments |  | 7 | 22
Unrecognized tax benefits, ending balance | $ 1,966 | $ 2,956 | $ 4,908

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- Definition Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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