Condensed Consolidated Statement Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 34,366	$ 47,336
Other comprehensive (loss) income:
Net foreign currency translation adjustment	(1,175)	1,110
Unrealized loss on fair value of derivative instruments	(153)
Total comprehensive income	$ 33,038	$ 48,446

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. 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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