COMPREHENSIVE INCOME - Schedule of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Equity [Abstract]
Net income	$ 32,756	$ 10,992
Foreign currency translation adjustment	(7,009)	13,780
Change in unrealized gain (loss) on derivatives, net of tax	(4,236)	7,838
Pension liability adjustment, net of tax	9	(6)
Comprehensive income, net	$ 21,520	$ 32,604

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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