UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 35,361	$ 12,359	$ 68,765	$ 67,800
Other Comprehensive Income [Abstract]
Unrealized gains on available-for-sale securities (net of taxes of $153 and $61 for the quarter and year-to-date 2013 and $146 and $63 for the quarter and year-to date 2012, respectively)	1,074	894	359	310
Foreign currency translation adjustments	20,731	29,086	(37,921)	27,393
Other comprehensive income (loss)	21,805	29,980	(37,562)	27,703
Comprehensive income	$ 57,166	$ 42,339	$ 31,203	$ 95,503

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 economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including 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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Amount after tax, before reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency.

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- Definition

Net of tax amount of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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