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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 15,663	$ 16,349	$ 35,927	$ 33,861
Other comprehensive income (loss):
Currency translation adjustment, gross	(10,047)	(8,980)	(636)	2,557
Tax (expense) benefit	3,488	3,098	308	(882)
Comprehensive income	$ 9,104	$ 10,467	$ 35,599	$ 35,536

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- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

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