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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Other Liabilities, Current [Abstract]    
Accrued expenses $ 32,634 $ 33,241
Hedging transaction liability 2,596 2,973
Uncertain tax positions 334 1,378
Total accrued expenses and other current liabilities $ 35,564 $ 37,592