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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 13,339	$ 16,015	$ 30,127	$ 38,697
Other comprehensive income (loss):
Currency translation adjustment, gross	(6,657)	873	(13,655)	480
Tax (expense) benefit	2,330	(306)	4,779	(168)
Comprehensive income	$ 9,012	$ 16,582	$ 21,251	$ 39,009

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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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