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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
NET INCOME	$ 111,422	$ 119,433	$ 104,289
Other comprehensive (loss) income:
Foreign currency translation adjustment	487	(1,347)	(863)
Unrealized holding loss on investments	(25)	0	0
Total other comprehensive (loss) income	462	(1,347)	(863)
COMPREHENSIVE INCOME	$ 111,884	$ 118,086	$ 103,426

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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 other comprehensive income (loss).

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